Jay6879

This is good to hear! I ended up getting the gt81, it's a newer model that has the rotator built in. Unfortunately it looks like weeks of clouds ahead so Im not sure when I'll get to try it out! I also had a Zenithstar 61, fantastic scope that set me down the path of William Optics ownership. They make fantastic scopes. After that came the Zenithstar 81, and now I have the GT81. I just wish there was a 1x flattener for it!

Wow that's a stunning image! Nice stars, don't see any chromatic abberation, good detail on the galaxy. Ok this looks promising! Too bad William Optics doesn't make a 1x flattener for it.

Im looking at picking up a GT81 specifically for astrophotography. Looking for any impressions or opinions from people with experience? How doy ou like it? Is it a worthy upgrade over a doublet?

Could that have happened from being a bit heavy handed on the scnr?

I'm in Canada, and the integration was around 15hrs. I'd love to see what would be revealed by doubling that time! I'm still quote new to Pixinsight, only been using it for a few months now but i had posted the image during a "debate" on well corrected doublets (of which the Z81 would be considered one) and when I posted that pic the people on the uh...other side of the debate told me it was full of CA which I found bizarre haha. This was my first go at processing this object beginning to end and I'm definitely going to have another go at it and carry forward what I've learned. I'll certainly consider not pushing it so hard, and correcting the color! I appreciate all the responses!

I'm curious to see if others see any chromatic abberation, and if so would you consider it acceptable? I got thjs image using an asi533mc and a Zenithstar 81.

Haha I've never seen this one. You're right l, the jaunty music makes it. Some of the text killed me too. "Reslly get in there" "Egg whites contain a natural cleaning solvent" Edit - and him trying and failing to hang it off the clothesline 🤣

All I know is astronomy tends to be so...dry. There doesn't seem to be much humor or joking around (my numerous funny posts on cloudy nights with sweet gifs and stuff that wre constsntly being deleted is good proof) so when i stumed across this video this dude instsntly gained a subscriber..

My asi585mc just got delivered today coincidentally. I'll be using mine as a guide camera/planetary camera since I have a 533mc for dso stuff. The skies are actually clear tonight so I kinda want to try imaging Saturn and Jupiter with my Skymax 150. I'm also interested in doing a mosaic of the moon using the same Skymax 150. Judging by what astronomytools shows it'll be at least three panels which will be ridiculously high res.

Yes it's a flat61A. He is a screenshot from tonight after adding the other 21mm spacer.. And a link to the raw sub.. https://drive.google.com/file/d/1aztjkp9c_haXMsfYKMmv5UZW8yqVm2xV/view?usp=drivesdk Stars look way better!

Wait...no hold on. The camera already comes with an 11mm spacer threaded on. So the math would be.. 21mm+16.5mm+11mm+6.5mm(camera body to sensor)=55mm ZWO says to set the flattener at 12.9mm for dslr's, a dslr also requires 55mm of backfocus. So essentially I just need to add that other 21mm spacer (which I wasn't using before, only the 16.5mm and 11mm spacers) and I should be fine....right?

21mm spacer+16.5mm spacer+6.5mm camera body to sensor gets me to 44mm. 67.9mm-44mm=23.9mm So my flattener should be set to 23.9mm? Am I doing this math correctly?

Ah ok this is good info. The asi533 comes with a 16.5mm and 21mm spacer, and a few really thin spacers. I'll have to figure out the math to see if I need more spacers or not. Or maybe the adjustment on the flattener will provide enough that those two spacers will be good enough.

Oh yeah for sure, flats are always used. I'll look into a more heavy duty bulb, like a Rocket Blower. Zenithstar 61

Ok, so the dust is more likely to be on the flattener optics or further down at the end of the refractor then? Any tips on getting rid of stubborn dust? I've got one of those lens bulb things but it doesn't do much.