The Big Guy - 150mm f/5 Astrograph Telescope - Free 3D Print Model

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jhootn

Education>Physics & Astronomy

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P1S

P1P

X1 Carbon

X1E

H2D

H2D Pro

H2S

P2S

H2C

X2D

A2L

0.2mm layer, 4 walls, 35% infill

Designer

157.5 h

15 plates

5.0(1)

Open in Bambu Studio

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150

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Description

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150mm f/5 astrograph for astrophotography

Documentation is definitely a WIP

The mirror being used in this scope I got from ebay, you can find it here. The camera I used is small so I just went with a 45mm secondary mirror.

General hardware that you're going to need is M4 heatsets, M4 screws, M6 heatsets, M6 nuts, M6 screws, and a couple of M3 nuts and M3 screws (for the guide scope clamp).

The only part with captured nuts that you have to pause and place is the bottom OTA.

There are parts in the 3mf for using both an Omegon focuser and a GSO focuser, although I've only ever printed and used the Omegon one.

You'll also need carbon fiber tubes that have an OD of 17mm. I personally used the 17x13 for extra strength. You can get them here.

If you want to print it or DO print it and have any questions - feel free to send me a message on discord @ jb1gs and I'd be happy to help out.

I've just had first light with this scope and it performed well, stars were tack sharp and round - I just have some tracking mount limitations and weirdness that I'm working through so I don't have any finished sample images yet like I do on my smaller astrograph Squat.

edit: got some images! The images attached to this posting are taken with this scope

Comment & Rating (33)

@FaeFoundry

Boosted

I'm trying to build one of these using GSO optics, not sure which fill blocks I should use. Only one fill block is listed for GSO, so I think it's just that twice? Great design btw, printing it out of ABS-CF.

(Edited)

The designer has replied

@jhootn

I've been running an omegon focuser on mine so it's required a couple of the fill blocks due to the lower profile nature of the focuser. The GSO focuser is quite a bit taller than the omegon so you may only need one. I would throw it together with just one and use a camera to try and achieve focus on a far away object, if you're struggling I'd print another fill block and throw it between the middle and top sections of the OTA

@user_4259866777

Excuse me, has your telescope been successful? I am also planning to use the GSO focus adjuster, but I'm not sure if the GSO filling module needs to be printed twice?

@FaeFoundry

Boosted

I still need to buy mirrors, but I'm 3d printing a 2" crayford instead of buying a GSO (design is on thingiverse). I plan on just arranging the parts on the poles until all my stuff (cameras / eyepieces) focus well in that range. Rhen I'm going to edit whatever segment is closest to the gap to get a distance based on what works. whenever I eventually finish I'll post any modified files. If you plan on using a Crayford you may want to just print a single fill temporarily, place everything, collimate, and then test focuses. Adjust if needed and repeat previous steps until happy.

(Edited)

@marc74

would you please update your files. omegon hole layout are a bit off. they just dont match. maybe you want to remix this model from another design at printables.com. it seems a guy is doing almost the same. Anyway thanks for your design... i will give you updates on my progress. and updates as well. almost ready for the first light thought the scope

(Edited)

@Danteavg21

is it an application for collimation

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@marc74

Replying to @Danteavg21 :

yes it is, easy to work with

@Grumpf

Boosted

Just finished collimating and now it's just waiting for a clear night for first light! Body is the Omegon version in Black PETG-CF. The cap and knobs are all in a tricolor Blue/Black/Purple Silk. I thought the colors matched up nicely with the all QHY motif.

(Edited)

@Ralphey64

Great design! I'm currently purchasing the parts so they arrive while I'm on holiday. Just wanted to know a few things. 1 - what length did you end up cutting the CF rods to? I'm trying to buy the 17x13s but can only purchase 1 per transaction. I believe they are each 1 metre long. 2 - the GSO focuser is $260 delivered which is still quite expensive. Is there an even cheaper one you can recommend or would this require an entirely new design? Thanks mate and look forward to putting this together.

@FaeFoundry

Boosted

I just posted a remix that has an integrated 2 inch crayford focuser you can build for under $20 in parts.

@FaeFoundry

Boosted

Not the creator but from my measurements the poles will end up being over 600mm with any focuser, so you're probably going to have to buy three 1 meter rods unfortunately.

@Melcom

Boosted

Thank you for this great project

(Edited)

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@user_1268790151

I would be profoundly grateful for your invaluable assistance in optimizing its scale for the Bambu Lab A1 mini, as I am keenly anticipating its printing

The designer has replied

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@jhootn

This wont print on an A1 mini, too large unfortunately. It barely fits on an A1 / P1S|P / X1C

@Tecfil3D

Boosted

Replying to @jhootn :

I am downloading your telescope project do you have a manual assembly video or contact information where I can write and consult you thank you and great project

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@jhootn

Replying to @Tecfil3D :

my discord username is jaybe321

@Tecfil3D

Boosted

Forgive my ignorance, and the lenses? Where can they be obtained

The designer has replied

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@jhootn

Agena astro has GSO mirrors, you could also get them on aliexpress or ebay

@Tecfil3D

Boosted

thank you for answering me I am trying to assemble the Omegon model do I have to print all the parts and to adjust the primary mirror I do not see parts for easier adjustment I saw some images where the adjustment screws had a plastic head

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@user_4037842908

Boosted

great design!

@kerubes

I cannot believe you have no comments on this amazing design. this is absolutely amazing. I wonder if a refractor can also be printed or perhaps the glass cost will make it imposible

The designer has replied

@jhootn

Totally possible I imagine, I just have no desire to look into doing so. At least in home-built, the quality that I imagine you can get out of a reflector far surpasses what you could get out of a refractor.