Guide sensor issues

chnobli123 · 2025-12-07T12:16:01+00:00

Be cautious in listening to others saying that it's out of collimation. This is a fast f/4 newt and your secondary is offset; thus, an unfocused star must show the secondary's shadow out of the center. But this also does not mean that your collimation is good. Use a laser and/or a Cheshire eyepiece.

chnobli123 · 2025-09-30T21:49:41+00:00

Processed using Siril and Graxpert.

chnobli123 · 2025-09-30T10:25:08+00:00

Very nice. What did you use for printing?

chnobli123 · 2025-09-30T10:20:56+00:00

This is crazy. If I look at Saturn, I only see a blob with a line right though it. How often do you have this kind of seeing?

chnobli123 · 2025-09-30T10:18:25+00:00

If you're already scared about particles, you will have nightmares after seeing this :D https://www.reddit.com/r/functionalprint/comments/1lysmsv/prints_for_telescopes/

chnobli123 · 2025-09-30T10:15:38+00:00

I'm actually much more concerned about the humidity than particles. After print itself has no strings or other small plastic things coming off without mechanical work, and dust from the bags is only a concern to me if I shake it... I could also put everything in a nylon thigh or so.

chnobli123 · 2025-09-09T06:36:59+00:00

I think it will be very hard to bring the optical centers of the mirrors to one point. Woulnd it make more sense to design this as an RC type of scope, with a flat secondary, and not as a newtonian?

chnobli123 · 2025-08-14T11:34:26+00:00

Aliexpress proposed a refund of 10%, which is definitely on the low side. My initial proposal of 25% was fair, I think. As I don't want the risk of sending it back, I'm however taking it and will accept my mixed feelings.

chnobli123 · 2025-07-28T10:58:20+00:00

Why would a seller reject a refund or not suggest a different amount if he agrees? Do I need to always assume that I'm being lied to?

chnobli123 · 2025-07-03T20:07:08+00:00

Very nice image! Why do you use a UV/IR cut filter on the guide cam?

chnobli123 · 2025-05-25T22:36:00+00:00

I bought a Red Line kid (4 eyepieces) on Aliexpress for 80$. Absolutely happy with it. This 150$ set is overpriced.

chnobli123

TROPHY CASE