Late sun images today 28 March 2023

[Averton]

Nice set of images Peter & Clare. The images of your setup are very instructive. Hoping to make some of my own images and animations again soon.

Thanks Peter
Have missed your posts recently. Hope to see some soon!

[Averton]

Yes, please! Do provide the file for the 3D printed adapter. A friend of mine has a 3D printer and I will ask him to have a look at the file. Thanks a lot!
Regards, Daniele

Daniele, here is the stl file. Had to zip it for the forum as it doesn't allow stl files.
You need to slice the threaded section at 0.1mm layer height.
Scout quark to M42 adapter.stl.zip

Dear Clare and Peter, sorry for the naive question: why you opted for a M42 thread? Most of the 2" extension tubes have M48 threads of I'm not wrong... Just in case, it would be possible to modify your file putting a M48 thread instead of a M42 one? Thanks a lot and sorry for the trouble!
Best,
Daniele

Hi Daniele,
We use M42 T threads as all of our ZWO cameras have that thread. We do not have a camera or adapter for M48. Unfortunately its not really practical to modify the CAD file without having an adapter to test a print with. This is because, unlike CNC, FDM 3D printing has shrinkage which has to be determined by experiment so without a test piece its not possible to make a model. Sorry about that.

[daniele_bonfiglio]

Dear Clare and Peter, sorry for the naive question: why you opted for a M42 thread? Most of the 2" extension tubes have M48 threads of I'm not wrong... Just in case, it would be possible to modify your file putting a M48 thread instead of a M42 one? Thanks a lot and sorry for the trouble!
Best,
Daniele

Hi Daniele,
We use M42 T threads as all of our ZWO cameras have that thread. We do not have a camera or adapter for M48. Unfortunately its not really practical to modify the CAD file without having an adapter to test a print with. This is because, unlike CNC, FDM 3D printing has shrinkage which has to be determined by experiment so without a test piece its not possible to make a model. Sorry about that.

Hi Clare and Peter, thank you it's okay anyway, I think I have found on the internet an extension tube that should work well with your 3D printed adapter. It has an M42 thread on the quark side and a 2” nose with a M48 thread on the telescope side for the required IR cut filter. This is the picture... What do you think?
Daniele

Screenshot_2023-04-02-15-44-24-344_com.amazon.mShop.android.shopping.jpg (90.33 KiB) Viewed 433 times

[DeepSolar64]

Superb images Clare & Peter
How is the arm Clare? hopefully nearly healed.

Alexandra

Thanks Alexandra
My shoulder is improving but still has a long way to go to get full range of movement back again. It's a very long slow process but I am making gains each day.

Clare,
I’ll remember you in my prayers.

James

[Montana]

Great to hear Clare, keep up the physio

Alexandra

[Averton]

Dear Clare and Peter, sorry for the naive question: why you opted for a M42 thread? Most of the 2" extension tubes have M48 threads of I'm not wrong... Just in case, it would be possible to modify your file putting a M48 thread instead of a M42 one? Thanks a lot and sorry for the trouble!
Best,
Daniele

Hi Daniele,
We use M42 T threads as all of our ZWO cameras have that thread. We do not have a camera or adapter for M48. Unfortunately its not really practical to modify the CAD file without having an adapter to test a print with. This is because, unlike CNC, FDM 3D printing has shrinkage which has to be determined by experiment so without a test piece its not possible to make a model. Sorry about that.

Hi Clare and Peter, thank you it's okay anyway, I think I have found on the internet an extension tube that should work well with your 3D printed adapter. It has an M42 thread on the quark side and a 2” nose with a M48 thread on the telescope side for the required IR cut filter. This is the picture... What do you think?
Daniele

Hi Daniele,
That looks like it should do the job.

[daniele_bonfiglio]

Hi Clare and Peter,
thank you again for sharing the stl file!
I finally managed to get the adapter 3D printed based on it. This is the result, the material is ABS.
May I ask a couple of questions:
1) what is the size of the 3 screws to be used to hold the quark?
2) do you confirm that I also need a 2" IR cut filter for use on a 80 mm refractor? I see you have the ZWO... I have found on Amaz... a similar 2" IR-UV cut filter by Svbony: do you think this will do the job as well?
Best regards,
Daniele

PXL_20230609_164155776.jpg (967.29 KiB) Viewed 272 times

[arnedanielsen]

Lovely views Clare & Peter!

Best regards,
Arne

[MAURITS]

Nice to see Clare and Peter.
Great to read that your shoulder is every day a bit better.

[Averton]

Hi Clare and Peter,
thank you again for sharing the stl file!
I finally managed to get the adapter 3D printed based on it. This is the result, the material is ABS.
May I ask a couple of questions:
1) what is the size of the 3 screws to be used to hold the quark?
2) do you confirm that I also need a 2" IR cut filter for use on a 80 mm refractor? I see you have the ZWO... I have found on Amaz... a similar 2" IR-UV cut filter by Svbony: do you think this will do the job as well?
Best regards,
Daniele

Hi Daniele,
Your printed adapter looks good.
We used M4 nylon screws to retain the Quark.
From the DayStar manual
"To prevent damage, we recommend using an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. This can be a UV/IR cut filter mounted before the diagonal, or a full aperture red or yellow glass ERF mounted in front of the telescope."

So we use the 2" IR/UV cut filter even with our 72ED as well as our K102.
SVBony filters seem quite reasonable so we can see no reason why it wouldn't do the job.
Looking forward to seeing your pictures

[daniele_bonfiglio]

Hi Clare and Peter,
thank you again for sharing the stl file!
I finally managed to get the adapter 3D printed based on it. This is the result, the material is ABS.
May I ask a couple of questions:
1) what is the size of the 3 screws to be used to hold the quark?
2) do you confirm that I also need a 2" IR cut filter for use on a 80 mm refractor? I see you have the ZWO... I have found on Amaz... a similar 2" IR-UV cut filter by Svbony: do you think this will do the job as well?
Best regards,
Daniele

Hi Daniele,
Your printed adapter looks good.
We used M4 nylon screws to retain the Quark.
From the DayStar manual
"To prevent damage, we recommend using an Energy Rejection Filter on telescopes of 80mm aperture or more, or when tracking the Sun for long periods. This can be a UV/IR cut filter mounted before the diagonal, or a full aperture red or yellow glass ERF mounted in front of the telescope."

So we use the 2" IR/UV cut filter even with our 72ED as well as our K102.
SVBony filters seem quite reasonable so we can see no reason why it wouldn't do the job.
Looking forward to seeing your pictures

Thank you very much Clare and Peter! Actually I have to get a telescope before taking any picture! I am thinking of a 80mm f6 achromat.
Best,
Daniele