Vroobel

Imagine, how cheap is the ASIAir if you think about it's simplicity and functionality. It would cost like a StellarMate new product, but it doesn't, just because you have to buy their more expensive stuff. I think it's quite fair. Also, they tie you with their brand.

Tiff please.

Could you share the master file, please?

It's exactly the bigger improvement. You don't need to use any sophisticated techniques to finish it, it's OK. You can add some photons next time if you want. How do you deal with noise in the post-processing?

That's why I counted only 63... 😏

Well, I'm not going to buy it as I already have ASIAir Plus v1, 2600MC and 2600MM. I take it as a curio for beginners. Rich beginners... 😉

Cuiv The Lazy Geek just confirmed: there is the ASIAir mini.

Great picture! 🙂 Exactly one year ago it happened that I captured the Markarian's Chain. When I run a StarXterminator on it I found 63 galaxies. How many of them you have in your picture? 🤔🙂 https://www.astrobin.com/v6wchq/

I have some thoughts about that. I realized that both a Celestron CGX and an EQ5 OnStep GoTo mod are very accurate in aiming at the target once they previously performed a plate solve. I think we can just slew (without centring) to the Moon straight after aiming at any near DSO with the plate solve. I will try this idea (hopefully tonight) with my Starwave 102ED F/11 (planet killer), it has a very narrow FoV while my ASI 678MC has a rather smaller sensor. I hope the ASIair can do it because NINA will be busy with Lion Nebula. Maybe Venus? 🤔 No, it's too low.

I'm not sure how the guider behaves if you want to use a dual-narrowband filter. E.g., the use of an OAG requires that filters are first after the sensor. This is about the Duo cam in general. BTW, I experienced problems with guiding with the OAG when I was refocusing (EAF). NINA offers pausing the guiding while refocusing, I'm curious how ZWO dealt with it.

Did I guess again? What will I do with two the same cameras? 🤔

One copy for me, as the winner, please. It looks like there are 4 USB ports. The Raspberry Pi rather cannot fit there, also it has USB ports in a fixed place. I would say that there is an ASIair mini and a power hub.

Haha, should I understand that I guessed properly (2600MC, not 6200MC) ?

Right, so here is how the final version looks like with 1.2mm spacer. Before and after BlurXterminator, just 'Correct only' selected. I nearly forgot: it's F/1.4. I'm not going to kill myself, I think it's much better than an average 40mm lens.

Within around half an hour... Original image: Also, reduced stars and smoothed background:

It's a WiFi-ready combination of 6200MC with ASIAir Plus v2 inside. 😁

The 44mm results in a big coma. Increasing the distance makes the coma smaller. When the spacer is 1.2mm thick, some corners have small coma while others have radial elongated stars. The spacer thicker than the 1.2mm results with elongated stars only.

I'm not sure if I know the meaning of FF and FR. Askar isn't a lens, but it doesn't behave like a typical refractor. The AberrationInspector shows the 9 areas zoomed. The central elongation is nothing in comparison to the coma in corners, easily correctable by the BX, while the coma is not entirely. I did the tests. Too thick spacer causes radial, elongated stars in corners, like star trails. Too thin spacer - still coma, but smaller. The optimal distance of 1.2mm is described in my previous post.

Can you share the original stacked file?

Of course, you are right, but why my Askar denies the following rule? I think it's because it's closer to a lens than to an astro refractor. Focusing by rotating a ring (OK, WO Cats also have it) while its objective moves in and out. Anyway, after many attempts I applied around 1.2mm spacer in total and I still have a small coma interchangeably with a radially elongated star in corners. I think it's a point of compromise. They are visible after stacking while an affected by LP background is still there. But the goal is to remove the background, then the distortion isn't visible. I made 30x30s F/1.8 for IDAS LPS-P2 and L-eXtreme filters, now I repeat the same for F/1.4 to see any difference. In the meantime, my main setup captures a Lion Nebula in SHO...

I selected a lunar tracking mode then used Cartes du Ciel to point the Moon and finally took the point at a framing section and then slewed to the Moon. Of course, it didn't centre, so I manually reaimed my scope at the Moon and voila!

Thank you Mark, I'll reed it ASAP.

BTW... 😂

So use this exact link for our area: https://www.meteoblue.com/en/weather/outdoorsports/seeing/liverpool_united-kingdom_2644210#

I already tried this way. It looks like they are machined poorly, like the thread is harsh and blocks when you screw it securely (that means quite strongly).