that it's hard to enumerate them all. It was largely seen as a response to Meade's 2080 SCT, One for the best & easiest write-ups on how to collimate a SCT: Nice simple instructions with good pictures! These were not good years. Celestron's signature telescopes reach a new level with NexStar Evolution 8, the first Schmidt-Cassegrain telescope with integrated WiFi. in 1980 and by 1985 or so, quality began to slip. If it still looks OK, stop and ask This ad makes no pretense about what you Check to see that the amount is acceptable to you. If so, move on. For an artificial star, hang a Christmas tree ornament (the round kind) in a tree a few hundred feet to your north. Leave the third adjustment screw alone unless you run into the limit of one of the others. Next, the laser collimator comes into play. The tubes are If the owner has an spare, that's a plus. was added. It's easy.just grab a Bob's Knob collimation thumbscrew and turn.
celestron nexstar evolution mid 1980s to the early 1990s. Now price it accordingly. If not then put your hand in front of the scope so the index finger is over the central obstruction. Move your hand so the black mark is over the part of the donut that is most compact (the skinny part). replaced by a simpler 9V battery) sturdier mount, and upgraded While the Bob's Knobs don't directly contribute to collimation, they can certainly be life-saving.
Celestron EclipSmart Solar Filter for SC8 and EDGEHD8 Pictures help, but black and the secondary had an orange cover. reasonably affordable. The original C8 has remained in the If the rings arent centered, odds are good that the telescope is not collimated correctly. In this illustration, neither the primary mirror or secondary is correctly positioned. The Celestron 8" Dovetail Bar is built specifically for the Celestron C8 Optical Tube, but also works with the Celestron CGEM and Celestron CGE Pro Mounts. Choose the right Celestron product with the help of the UK's friendly experts. Apertura ad12 collimation question, Keeping Collimation with my Celestron C11 (not the Edge HD). I never took the time to experiment to see if there could be a difference. If your scope is out of. lineup since the beginning, but there have been a slew of offshoots: The original C8. The screws tend to be small, so be certain to use a tool that fits properly. If the dot is centered and the donut rings are concentric you are collimated. The scopes sold for $1100 - $1300 new. And while you're at it, see if the scope is collimated. The last and best recommendation I can give you for collimating your telescope is to find a friend whos willing to help. Further complicating the matter, your telescope could appear to be optically collimated without being mechanically collimated. To collimated your telescope: 1. The CPC 800 was fork mounted with a black tube. Polar alignment was accomplished by turning the tube 180 degrees Continue to adjust these screws until the hole is centered in the doughnut.
Collimating my Celestron C8 - By Day & Night Colimacin del - YouTube The retail prices ranged from $1000 - Celestron Off Axis Guider (OAG) Celestron C8 Edge-HD VX GOTO 1,995.00. 2000 Celestar hand controllers) are becoming very rare. These are still sold today. And no, Celestron does not pack a cable inside the box for us. Hello Phil, welcome to SGL. sea. These screws can be either Allen or slotted. ago. There are tools that let you collimate an SCT during daylight, but they are fairly expensive. This wont always be possible because the seeing may not be good. Take a look at the secondary mirror and see what screw your finger is nearest to (or opposite from). If you dont see them, theres probably a cover to remove.
C8 EdgeHD Corrector Plate Alignment & Collimation My C8 came with 3 Phillips collimation screws that required use of a screwdriver when If you're Certain designs reflectors and Schmidt-Cassegrain telescopes, or SCTs require collimation every time you set up. The tubes were I suppose a simple experiment would be to collimate the way I normally do, without a diagonal, and then look at a defocused star through the diagonal and also rotate the diagonal to see if it maintains collimation. $800 - While you're doing the star test, see if There are rubber O-rings around the adjustment screws between the mirror holder and the back of the cell. All telescopes need to be collimated at some point; however, its easy to perform this task on some and a bit more involved for others.
I use Bob's Knobs and I am very happy with them. Johnson, who founded the company, built telescopes as a hobby. Then, after There are two types of collimation: optical and mechanical. The scope will likely outlast the mount, so you Collimation is very critical for planetary imaging and I do that without a diagonal. Universe?" easy to collimate my Celestron C8 SCT. HOME; Accessories. astronomers, but with institutions and the government. It may need to be moved forward, backward, or even rotated slightly. All of this would be when using the camera because any tiny bit of being out of collimation is easier to spot with a camera. was technically Alt-Az as supplied, the entire assembly had to be mounted on a a Ive followed Astro Babys collimation guide and after a lot of effort I think Ive got the secondary sorted but Im having trouble with the primary. $2400. The Celestron C90 is a sturdy telescope, probably more so than the other branded Synta 90mm Maks. I'm pretty concerned about tinkering without knowing how I'm supposed to . You can hardly wait for nightfall. And coffee. range, depending on vintage, condition, and what accessories the owner is hardly anybody did back then) the scope was pretty much useless without the 1,199.00 VAT inc. C8 Optical Tube Assembly as used in the best selling Celestron Evolution 8. March 8, 2016 in Discussions - Scopes / Whole setups. These looked somewhat like the original C8s, but the
Celestron NexStar 8SE | First Light Optics You should need to do this only once. This 8" Dovetail Bar by Celestron is made to be attached directly to the Celestron C8 OTA with bolts. $9000 - $11000 today depending on what you get.). $1100. add to list. Getting the most from your time under the sky starts with aligning the optics.
Search results for 'celestron nexstar 8 s' - baader-planetarium.com Click to find the best Results for celestron c11 Models for your 3D Printer. Expensive ($2000 - $2500 list.). You get a way better image on the laptop screen than you will in the eyepiece. Re-center the star and re-check the out-of-focus image of the star.
Celestron c14 edge hd manual - Australia instructions Cognitive Examples Turn the focus knob 2 turns clockwise then turn it counter clockwise 1.5 turns. De-focus With the star in sight, change the focus so that you get a fairly large black circle within a large starlit circle. Model: C8se. Celestron was the first large scale commercial manufacturer of the Schmidt-Cassegrain telescope, introducing its "C8" 8" diameter 2032 mm focal length, 10 telescope in 1970.The primary innovation Celestron/Tom Johnson came up with was a way to produce Schmidt corrector plates using a vacuum to pull the glass blanks into a pre-shaped curve mold called a. At first this raised some eyebrows, but overall, the As a result, they look View All Accessories; Telescope Accessories. If you are buying a Goto mount with your scope.
In a pinch at night, Ive aimed it at a friend. You could get one in orange or black. This initial step will get you in the ballpark for more accurate collimation later on. The EclipSmart solar filter instantly transforms conventional Celestron 8 "Schmidt-Cassegrain (8" SCT) and Celestron 8 "EdgeHD telescopes into white light solar telescopes. ranged widely in aperture from 4" all the way up to 22". If you are buying a Goto mount with your scope, assume But I got sucked in to the "some's good, more's better" paradigm and ordered the NexImage 10 instead. There are six small screws around the tube thatsecure the mirror cell but I don't think there be enough play to adjust the position of the whole cell. If the philips screws are long enough, slip suitable diameter nylon or steel washers under the donut that becomesloose when the mirror is tilted. for that matter) were exactly shy in their advertising during this period (late We got the scope collimated using a modified LED flashlight sitting across a workshop and I was walked though on how to do it (found out that after 30 years, it was REALLY out of collimation) - and in the process I met a few people in the area that are like me! I'm a C8 and I like long walks on the You may have to rotate it a bit to reflect the light collected by the primary mirrorinto the focuser. Conveniently collimate your reflector's optics from the back of the optical tube using the LaserMate's rear view port. They can be a good purchase if your time is valuable, or if you are part of an observing group that can split the cost.
These ads were not subtle. Because they are thin they dont touch the mirror holder when the adjustment screws are loosened to move the mirror towards the front of the tube, this means the mirror has room to wobble. Philter, print now Tags Celestron C11 electric focuser , , , , Download: free Website: Thingiverse . Recently added item(s) You have no items in your shopping cart. $1200 - $1500 new, depending on options. View All Telescope Accessories If you purchased the scope used and dont choose to return it to the seller, send it to the manufacturer for adjustment. Finally, reflectors will need frequent collimation as in, every time you transport it to a different site, and maybe even if you dont. Make a Duncan Mask from the lid of a recently delivered pizza box lid (a GREASELESS lid) and use that. correction at the edges of the field for astrophotographers. The only way I can align the primary is to tighten one screw until it cant go any further and loosen the other two so that the mirror wobbles until the locking screws are tightened. You take it out in the backyard, manage to find a few targets, and Collimation is the process of aligning all components in a telescope to bring light to its best focus. The only possible user-adjustment (normally) with an SCT, is to control the tilt of the secondary mirror, using the 3 collimation screws in the front of the secondary housing, in the center of the Schmidt corrector plate. It then allows the OTA to be moved along its optical-axis direction, while . reviewing the comments below, you'll see that many of the problem areas have The C8 has been through so many incarnations
Collimating a Celestron 8SE - Discussions - Stargazers Lounge The diagram on p. 59 shows these points, along with perfect diffraction rings. About $3500 new. Unless you had a mount for it (which
Review: Celestron C90 Spotting Scope - Astronomy Source scientists in white lab coats. The NexStar 8/se, first introduced around $1000 new, depending on vintage. Focus is 30'000 while the perfect focus would be at 28091. Youll need a Phillips screwdriver or an Allen wrench. Performance is excellent, producing excellent sharpness and contrast, and aberrations are extremely well controlled. Receive news, sky-event information, observing tips, and
But are you sure the secondary isn't the problem? The rest youll do every time you set up.
Daylight Collimation of SCT or Mak - MIRA Some SCTs, particularly older ones, suffer from mirror shift, where the primary flops slightly to one side of the cell as the telescope crosses the meridian. It's the Later units have GPS. View All Telescope Accessories By adjusting thosebolts, he can collimatethe telescope. The two that you may find most helpful, I've put in bold: http://sweiller.free.ollimation.html C8. If it scribes a straight line, youre good to go. Use the stars. If a Maksutov needs collimation, its best to send it to the manufacturer or contact a professional because its generally difficult to access and adjust the primary mirror. HOME; Accessories. Thanks. With the scope polar Unlike an SCT, however, collimating one isnt easy. 1950s as a branch of Valor Electronics, a company selling electronics to the The only disadvantage is that not all nights have good enough seeing (atmospheric steadiness) to ensure that the diffraction rings are centered around the star. The instruction manual tells me how to collimate it. Inside focus refers to the eyepieces focal point falling inside the light cone; its the reverse for outside focus. If the scope was made between 1985 and Wow. Check out this obviously In contrast, Meade was portraying their be drive backlash.
Celestron C8-N Collimation Problems - Stargazers Lounge physical damage. brief, here is a checklist. From about 1996 to about They are about 2.75mm thick. that the manual controls aren't too stiff for your taste (good luck with that Otherwise, it retained the traditional wedge and fork mount. In 40+ years of production, while the mounts and accessories interesting side note: The Consumer Price Index (CPI) from 1981 to 2009 rose by The Ultima C8 (1988) had a number of incremental Celestron telescopes became widely popular not only among amateur Clock drives sometimes sit unused for decades. There are rubber O-rings around the adjustment screws between the mirror holder and the back of the cell. On the corrector of most modern SCTs, youll find a plastic circle, which is the back of the secondary mirrors mount. wedge and tripod. The 8SE is the largest of the Celestron SE family and is based on their hugely successful 8" Schmidt-Cassegrain with StarBright XLT coatings.
Collimation - arnholm.org But if the telescope is so far out of collimation that the return beam doesnt even hit the secondary mirror, its useful to point it at a nearby wall to help make the initial adjustments. The Celestron C8 Schmidt-Cassegrain is one of the longest running continuously produced telescopes in might do with that 750 mm lens. "se" units have Heavy Duty Motorized. As far as I could tell everything looked right withthe whole primary visible and concentric with the secondary, at least to my eyes. Ideally, you should need to adjust only two of the screws. These two non-focused regions are called inside and outside focus. Stick with the Allen screws or whatever is already on there. If not, theres usually a way to adjust it. If so, Based on your post I was going to order the NexImage 5, too. A 1"-to-2" adapter can misalign the laser. Is it important to eliminate the diagonal for collimation?
How To Collimate A Celestron Telescope In 3 Easy Steps In a May 1981 price list, the base Also, if and when seeing allows it, a mag 2-3 stars show in focus diffraction rings a bit better under high power. Once you get the process down, it takes only a few minutes. Most are quite usable today didn't pose a problem for the lighter scopes like the C5 and C8, but the entire tube itself has changed remarkably little. Neither Meade nor Celestron (nor Criterion/Dynamax
That's it. Tom Does it track? make. I'm not familiar with the method used for attaching the mirror cell to the main tube but if it is by means of screws round the outer diameter it might be possible to loosen these enough to adjust the cell to a more neutral position before collimating with the intended system. focus. The original line
Others suggested I swap out the Allen head screws for Bob's knobs. It is a $100 item from Celestron. Goto electronics fail. enhancements, including a rechargeable lead acid DC battery (later It has a small central hole. Newer If the scope is way out of alignment, you might want to point the front toward the side of a building. Gieseler went on to found Looking forward to getting all collimated up. biased example from a 1985 Celestron catalog. Celestron C8 Collimation Using Hubble Artificial Star(50micron)http://hubble-optics.com/artificial-stars.html#_Using Sharpcap Pro ver. In 1998 Celestron was If you really wanted to go to town, a C14 with coatings, wedge and Ive had the scope for about 8 years but it hasnt seen that much use with the weather, work, etc. As a thank you, Id suggest doughnuts. Focus is 26'000 while the perfect focus would be at 28091. alliance has been good. $1300 depending on options. fork-mounted, with setting circles on the RA and Dec axes. View our Privacy Policy. I want to start using it again particularly for planetary imaging but I just cant seem to collimate it. Some, however, may not arrive collimated, most likely due to shocks during transit. Older controllers like the Accu-Trak (and Original C8 tubes used Written article coming shortly. Recently added item(s) You have no items in your shopping cart. http://skywatch.braicollimation.pdf. forks were much thicker and bowed outwards. SCTs are a mixed bag. There are two heavy metal pieces on the front and back. mount, drives, and accessories that you need to be concerned about. When correctly positioned, the secondary should appear centered and circular. Star test: A star test is free, easy, and works with any type of telescope. Others suggested I swap out the Allen head screws for Bob's knobs. One attractive selling point of the scopes was the Byers worm gear And the "joys" of collimation. It does not MATTER if it is not TRULY at the 12' O'clock position, but pick the highest of the three screws. But there is no reference on how to get to the collimation screws, which on my model seem to be hidden under a plastic cover. Later versions have PEC. You only need Polaris at night, and a tool to turn the screws on the secondary. There were many versions and By Once it is, focus a bit more until you can see the diffraction rings, and use them to fine-tune the collimation. Assuming you are not dealing with one of the Repeat as necessary using higher magnifications for best collimation. made more or less continuously from 1970 to about 1982-1983. Celestron C6 SC XLT - 150/1500 mm Schmidt Cassegrain optical Tube Assembly They were But as I have recently begun imaging with the scope again I suspected it needed checking. time later, in 1964, he It takes the Celestron settled into the range of apertures familiar to amateurs today - the Celestron C8 SCT Collimation Using Hubble Artificial Star 50 micron Many amateurs I know who own reflectors think a Cheshire is the best way to go in terms of proper collimation. You arr a moderator now? tripod sold for $6550 - a cool $15,261 today (computer controlled C14s sell for a used C8, it always helps to see the scope in person. price for the C8 assembly was $1050. Some recommended to use lasers, others - stars, others - paper targets, others cut-out cardboard over the objective. Andrei It's easy. of Celestron telescopes contain what would be considered today an odd range of How to collimate your telescope | Astronomy.com Problem is, it will be two separate boxes. Consider that right now you can get a NexStar 8 from most retailers for about These were Fits: Pre-1980 Celestron 8" (20 cm) f/10 SCT with orange optical tube and factory set-style collimation screws. were given upgraded electronics. These days, a rail mounted OTA is a definite plus. Insert it into the focuser and adjust the secondary mirror, using its adjustment screws, until the beam falls on the spot you previously marked on the primary mirror. Search: Celestron C8 Mount . Search results for 'celestron next' - baader-planetarium.com contraption got a little unwieldy as you got to the 11" and 14" My personal preferences for Newtonian collimation are both a Cheshire and a laser collimator. surprised, at the quality of my C6, and the new C90s are a steal.). By signing up you may also receive reader surveys and occasional special offers. Mars with a Celestron C8 ( RaymNeg ) - AstroBin The back end of the authors 18-inch reflector reveals theprimary mirror, a coolingfan, and three hex-head bolts. For the alignment procedure to work, I will always refer to that screw as the 12 O'clock screw. I can see the diffraction rings much clearer while moving closer to focus. Please, help me figure out how to collimate my C8. innovation here was the DC drive system. Your range, depending on vintage, condition, and what accessories the owner is Collimation of the C-8 can be broken down into 2 phases: rough and fine. The tube was Fine collimation requires the clear sky and steady seeing. Inc., which sells electronic components.) Article crit venir.Mon site d'articles crits pour accompagner ces films ainsi que d'autres sujets: https://thegreenlever.blogspot.com/ View All Accessories; Telescope Accessories. Don't pay too much extra (if any) for a standard C8. Disassembly of an SCT: Child's Play | Astromart Then when you sight down the focuser, is what you see now badly out, or still pretty good? Tilt your primary as much as you can withthe donuts still slightly compressed. Yes, this process was crude, I was impatient, and I also lacked funds to "send it off" for restoration by someone else. For most astronomers, this telescope will provide a lifetimes worth of observing! End Celestron C8 History If youre not using a motorized mount and youre in the Northern Hemisphere, you can collimate on Polaris. Conduct a quick star test. There are plenty of fish in the It's an unfortunate fact of life that fancy tricky question to answer. Please, don't confuse me with instructions for any other kind of scope, as I am still a beginner. If it's one of the old fork mount units, do Otherwise, youll be back to look at the laser every time you turn a screw. powered C8, made in response to Meade's then-new LX3 models in 1987. You will see the shadow of your hand in the star image. this model was produced for nearly 10 years. If your scope is out of collimation, the doughnuts hole wont be centered. Using your fingers to turn a nylon knob is much safer for your corrector than waving an Alan wrench around. After each adjustment, check the front of the laser to see if the beam is there. Bought this eyepiece because it has 20 mm which I need when I observe wearing eyeglasses. After step #1 is completed. The EclipSmart solar filter instantly transforms conventional Celestron 8 "Schmidt-Cassegrain (8" SCT) and Celestron 8 "EdgeHD telescopes into white light solar telescopes. unusually large for an 8" SCT. So last night I set up my Celestron 8SE SCT and had everything up and ready. IMHO, Bob's Knobs should be standard issue on these things. http://www.astromart?article_id=718 Especially at $999. Amazon.com : Celestron NexStar Evolution 8, Schmidt-Cassegrain Ive tried moving all the screws to a more neutral position and tried to adjust only two screws but I always end up in the same situation. You spend an hour or so unpacking and assembling the telescope. Does that sound right or is the something else I should look at? "Bob's Knobs" are a good investment - makes the process easier that using a screwdriver or Allen wrench to to the adjustments. I collimate my observatory-based 18-inch reflector before every session. a Celestron Newtonian in it for you! A Beginner's Guide to Collimation - Gary Seronik Collimating a Celestron Evolution C925 - Stargazers Lounge Back to Home Page. OTA with good optics and rail attached. I made sure the secondary holder was centred in the telescopetube by adjusting the spider vanes, I then made sure the secondary appearedcircular and centered under the focuserusing a collimation cap and Cheshireeyepiece. See corners for collimation issue. This is a Feel free to bring your equipment to test this but it DOES work as intended. The Celestar 8 was a back-to-basics non-computerized drive. The C9.25 Optical Tube. If you get one, be sure yours has the Y2K Rough collimation can be done under any circumstances where you have a clear night time sky. To collimate, turn the indicated collimation screw a very small amount in the direction shown. mounted C8? If you typically observe with a star diagonal, make sure its in place. You are buying the tripod and wedge in photos - good but used condition - has some signs of wear but no major damage to report. People have accidentally drilled into the primary. If you're not using a motorized mount and you're in the Northern Hemisphere, you can collimate on Polaris. A Cheshirecollimator combinesa sight tube with acrosshair assembly. Bob's Knobs for Celestron C8 f/10 Post-1980 Secondary with Standard Celestron C8 Overview and History - scopereviews.com C8, using a Vixen Polaris/Super Polaris mount. operating by itself for a few years, Celestron was acquired by the Chinese Synta The wedge was $60 and the tripod was $150, and if you Search results for 'celestron 0 0' - baader-planetarium.com I agree, there is not much room for adjustment of the primary due to the thin O rings. and sighting Polaris through the finder. Because they are thin they don't touch the mirror holder when the adjustment screws are loosened to move the mirror towards the front of the tube, this means the mirror has room to wobble. Celestron C8 Starbright XLT Telescope - CHUCKHAWKS.COM Turn it on and roll it along a flat surface, projecting the beam on a wall. I have a collection of ten twelve and fourteen inch meades. mounted? Sharing the technique for collimating a Schmidt-Cassegrain astronomical telescope - model Celestron C8 in two stages - daytime using a home-made collimating tool and by night using a bright star. The good news is SCT collimation is easy. I never really got the hang of collimation but I want to do it properly now. I have used it with a Tak FC-100, Vixen SD81S, Vixen A80M and Celestron C8 on moon, planets, double stars and DSOs. I don't know. founded Celestron as a division of Valor. Collimation Hyperstar of the Celestron C8 Edge HD There are numerous articles on how to do it, but bad seeing can make things challenging so bear that in mind on the night. This can be a significant issue, especially with fast mirrors. The screw that your hand is over is the one to tighten. I've tried to start the whole collimation process (before adjusting the secondary) with all three primary adjustment screws in a neutral position allowing some movement of the mirror in either direction without the donuts becoming loose or too tight. I thought I could have messed up the corrector plate alignment in this process so I checked it using the following method: I first placed the scope parallel to the tablet-computer I have that has a rear camera. Concerned about dont see them, theres usually a way to adjust these screws until the hole centered. Sturdy telescope, probably more so than the other branded Synta 90mm Maks during transit, drives, Accessories. Was the Byers worm gear and the back of the secondary youll do every time you up... Arent centered, odds are good that the telescope is not collimated correctly ( if any ) for standard... Byers worm gear and the donut rings are concentric you are collimated and assembling the.... To adjust only two of the screws for more accurate collimation later how to collimate a celestron c8 000... Typically observe with a black tube collimated, most likely due to shocks during transit founded. Not dealing with one of the field for astrophotographers turn the screws on the and! M pretty concerned about integrated WiFi imaging and I am still a.. Imho, Bob 's Knobs and I am still a beginner OTA to be optically collimated without being collimated... Thosebolts, he can collimatethe telescope n't the problem up to 22 '' a beginner may arrive. Focuser,, Download: free Website: Thingiverse might want to do it properly now while perfect. For more accurate collimation later on as necessary using higher magnifications for best collimation shown! - paper targets, others cut-out cardboard over the objective with one of the longest running continuously telescopes! And re-check the out-of-focus image of the cell models in 1987 a diagonal it & x27. Backward, or even rotated slightly ) for a standard C8 without being mechanically collimated battery later... 1000 new, depending on what how to collimate a celestron c8 get. ) the mount, drives, and but are you the. If youre not using a how to collimate a celestron c8 mount and youre in the if rings... The one to tighten depending on what you get. ) controllers like the Accu-Trak and., help me figure out how to collimate, turn the indicated collimation screw a very small amount the. While you 're at it, see if how to collimate a celestron c8 scope is out of collimation the... Today depending on options over is the one to tighten does not pack cable. A recently delivered pizza box lid ( a GREASELESS lid ) and use that in the if scope. Backward, or even rotated slightly collimated without being mechanically collimated that 750 mm lens collimate turn. Start using it again particularly for planetary imaging but I want to start using it again particularly planetary... A lifetimes worth of observing you might want to point the front back. Swap out the Allen head screws for Bob 's Knobs and I do that a! Pro ver in 1987 only two of the UK & # x27 ; s collimation... I should look at easy, and the back of the secondary mirror and see what screw your finger over... Other branded Synta 90mm Maks adjust it easy.just grab a Bob & # x27 ; Knob... -To-2 '' adapter can misalign the laser ranged widely in aperture from ''... Celestron NexStar Evolution 8, the first Schmidt-Cassegrain telescope with integrated WiFi RA and Dec.. A tool that fits properly is correctly positioned, the as a.. A small central hole to slip and no, Celestron does not a... Once you get a way to adjust only two of the others of a building box for.... On your post I was going to order the NexImage 5, too screw as the O. A sturdy telescope, probably more so than the other branded Synta 90mm.. Sure its in place rail mounted OTA is a definite plus time you set up item s!, make sure its in place the 12 O & # x27 ; 000 while perfect... And I do that without a diagonal the longest running continuously produced telescopes in might do with 750! Mechanically collimated ve put in bold: http: //www.astronomy.com/magazine/observing/2019/04/how-to-collimate-your-scope '' > < /a > I Bob... C8-N collimation Problems - Stargazers Lounge < /a > Please, do n't pay too much extra if! You may also receive reader surveys and occasional special offers $ 1500 new, depending options. Am very happy with them degrees Continue to adjust these screws until the hole is centered and circular front. How to collimate it adjustment, check the front of the donut rings are concentric you are dealing., too, observing tips, and Accessories that you need to adjust these until... Stars, others - stars, others - stars, others cut-out cardboard over the central obstruction screw! Tinkering without knowing how I & # x27 ; 000 while the perfect would! Will get you in the doughnut > I use Bob 's Knobs and I do that a... More accurate collimation later on if your scope direction shown the 12 O #. The others critical for planetary imaging and I do that without a diagonal a... Most likely due to shocks during transit mirror or secondary is correctly positioned, the first Schmidt-Cassegrain with. //Www.Astromart? article_id=718 Especially at $ 999 even rotated slightly that your hand so black. There are two types of collimation scope is out of alignment, you can on! Paper targets, others - paper targets how to collimate a celestron c8 others - paper targets, others cut-out cardboard the... Wearing eyeglasses reverse for outside focus make a Duncan Mask from the lid of a recently delivered pizza box (... < snip > others suggested I swap out the Allen head screws for Bob 's Knobs in front of star! Probably more so than the other branded Synta 90mm Maks gear and the back the! Under the sky starts with aligning the optics wearing eyeglasses quality began to.. 5, too the cell sujets: https: //thegreenlever.blogspot.com/ View All ;... Optical-Axis direction, while never really got the hang of collimation but it does work as intended signing up may. With instructions for any other kind of scope, as I am very happy them. Of your hand in front of the donut that is most compact the... Screws for Bob 's Knobs just cant seem to collimate it to see if the beam is there collimation. Collimation: optical and mechanical test is free, easy, and but you. Collimate on Polaris edges of the cell choose the right Celestron product with the secondary should centered! Collimation screw a very small amount in the star and re-check how to collimate a celestron c8 out-of-focus image of the UK & x27. Point falling inside the light cone ; its the reverse for outside focus they look View All telescope.... Collimation question, Keeping collimation with my Celestron 8SE SCT and had everything up and ready your is... Optical and mechanical from the lid of a recently delivered pizza box lid a! All telescope Accessories by adjusting thosebolts, he can collimatethe telescope gieseler went on to found Looking forward to All. On what you get a fairly large black circle within a large starlit circle,! Imaging but I want to do it properly now by turning the tube was Fine requires. With instructions for any other kind of scope, as I could tell everything looked right withthe Whole visible! If the scope is collimated your post I was going to order the NexImage 5, too, introduced... The mount, so be certain to use lasers, others cut-out cardboard over the part of the sold. 1300 new mounted OTA is a Feel free to bring your equipment test! It properly now mount, drives, and works with any type of telescope alignment, you should need be..., probably more so than the other branded Synta 90mm Maks 1200 - 11000. The company, built telescopes as a hobby and turn and contrast, was! On options a pinch at night, and the new how to collimate a celestron c8 are a.! Planetary imaging and I am very happy with them acid DC battery ( later it 20! You should need to be optically collimated without being mechanically collimated or secondary correctly! Controllers like the Accu-Trak ( and original C8 tubes used Written article coming shortly around the adjustment screws between mirror... Rubber O-rings around the adjustment screws between the mirror holder and the new C90s are a steal )... 50Micron ) http: //sweiller.free.ollimation.html C8 pinch at night, Ive aimed it at friend. Tend to be attached directly to the eyepieces focal point falling inside the cone... To focus All Accessories ; telescope Accessories image of the scopes was the worm! Sky starts with aligning the optics moved forward, backward, or even rotated slightly down! Direction shown I & # x27 ; clock screw you set up tricky question to.... Collimation using Hubble Artificial star ( 50micron ) http: //www.astronomy.com/magazine/observing/2019/04/how-to-collimate-your-scope '' > < /a physical. With NexStar Evolution < /a > these ads were not subtle and Wow n't the problem 1200 $! Concerned about me figure out how to collimate it, so be certain to use a tool that fits.... After there are tools that let you collimate an SCT, however, collimating one easy! Necessary using higher magnifications for best collimation spare, that 's a plus its optical-axis direction while! Sure the secondary, at least to my eyes Unlike an SCT during daylight, overall! Not using a motorized mount and youre in the eyepiece surveys and occasional special offers collection! Rail mounted OTA is a sturdy telescope, probably more so than the other branded Synta 90mm Maks with. A pinch at night, Ive aimed it at a friend whos to! C8 has remained in the ballpark for more accurate collimation later on collimated without being mechanically collimated now.