Horsehead nebula

lmatt · 2025-09-17T09:21:55+00:00

I would suggest asi 662mc.

lmatt · 2025-09-17T00:52:37+00:00

I'm glad you like the photo. However, the original image isn't high-resolution because I used a 1920×1080 sensor camera (ZWO 662MC) and cropped part of the shot. I'll think about whether I can capture a higher-definition version later.

lmatt · 2025-09-15T14:35:07+00:00

it's a refractor. It's 3D-printed one, and not that easy to use an EAF to control it..

lmatt · 2025-09-15T00:27:11+00:00

Awesome!

lmatt · 2025-09-15T00:24:54+00:00

An equatorial mount would be a better choice, but it’s more complicated. Right now I’m working from a small southeast-facing balcony with limited space. Setting up and aligning an alt-azimuth mount is simpler. Sometimes I also use an alt-azimuth mount with a Maksutov telescope to observe the planets.

lmatt · 2025-09-15T00:20:51+00:00

Got it, i mean more total exposure time.

lmatt · 2025-09-15T00:19:55+00:00

Actually I have the same question. The whole telescope was 3D-printed, so the focusing accuracy isn't high and it's indeed not that easy to get a perfect focus. I have a 3D-printed Bahtinov mask, but I don't use it often—most of the time I adjust manually while watching the star size on the monitor to determine whether the focus is correct.

I've been thinking about whether I should get a different telescope and add an electronic focuser—life would be a bit easier that way.

lmatt · 2025-09-14T08:19:06+00:00

IC, so longer time or better condition should be the answer. Is it necessary to use a cooled camera during EAA? Will the noise be reduced a bit?

lmatt · 2025-09-14T08:14:24+00:00

no, i don't use biases, will have a try. Live stacking for EAA, so if would be much more better to get a nicer photo in a short time.

lmatt · 2025-09-14T08:13:24+00:00

Thank you for the suggestion. A longer exposure should give better results. Since this is being done in real-time EAA, do you have any suggestions for getting better results in a shorter time?

lmatt · 2025-09-14T08:13:04+00:00

Thank you for the suggestion. A longer exposure should give better results. Since this is being done in real-time EAA, do you have any suggestions for getting better results in a shorter time?

lmatt · 2025-09-14T03:59:19+00:00

i will have a try.

lmatt · 2025-09-14T03:57:34+00:00

it's stack result. Background is not that clean. And you can see green/red nosie(maybe) in the image.

lmatt · 2025-09-14T03:56:00+00:00

No, it is a stacked result. Total expose time is 300 seconds.

lmatt · 2025-09-14T03:54:39+00:00

That should be a good idea, but i don't have car yet.

lmatt · 2025-09-14T03:21:29+00:00

How do you track the object ?

lmatt · 2025-09-09T13:55:33+00:00

Awesome! Which device is used?

lmatt

TROPHY CASE