Uranium235

A quick seardh of google has rumours of maybe april/may before they announce a mono version.

Youre in a sweet spot there with that camera since its square sensor doesnt ask so much of the lens (a mono 533 would be interesting). Once you go bigger you need a microfocuser to tease out the corners (a b-mask only gets you close).

Thats why I brought it its all about the corners (first place I go on an image)

Well, not a lot on last night, clear sky, but moon in an unfortunate spot so I swung around to this one for a couple of hours. The primary goal of the image was to perfect the corners at full speed over a 22mm diagonal. And, Ive pretty much achieved that.... not bad for a 450 quid lens The focus drifted a little as the temperature dropped, but not too bothered about that since its still basically a tester. 16x600 (Ha) Samyang 135mm @f2 - QSI583 Corners @200% Thanks for looking

Pixel peepers delight 16x600 (Ha) (corners @ 200%)

Old skool CCD mate QSI583 - KAF8300 sensor. Had to limit my exposure length to 7.5min due to where it was (I have a very limited window on it), at least that way I could generate a stack just big enough to average out some of the noise.

KAF8300 sensor (just a little smaller than APS-C) 22mm diagonal

Save it off as a 16bit TIFF, you might get more responses

Orion - smash & grab 45min (6x450) x2 Ha Bad LP, but a very good sky tonight. Could probably process it better, but not bad considering the time spent.

Make that x3 sammys, now that would be nice (hoping to get my second in April... all part of the plan)

One for the pixel peepers! Extreme corner crops from the Jelly/Monkey image... not bad, can be better I think. Getting the focus nailed at f2 is a little tricky in Ha, at least I have the option to lock it now.

Monkey Jelly @ f2 (15x450)

Regular filters will do. But as mentioned above, the thickness of the filter is a factor becuase it can have a massive effect of the amount of refocusing you have to do between filter changes. Personally, I stick with 2mm as more manufacturers use that thickness.

I'll kick it off, a quiet year in astro terms - but things didnt really start improving until towards the end of the year.

Its that time once again! Please use this thread to showcase your best images captured during 2021. Just one post per member but you can include up to 5 images if you want. The thread is for all imagers, both novices and advanced. Please keep details to a minimum - scope and camera possibly along with a few comments if required. The thread needs to be packed with images so please don't respond to the postings. The previous years showcase thread(s) can be found here: https://stargazerslounge.com/forum/203-imaging-showcase-threads/

Had a couple of good nights now, so Ive been able to gather 4 hours on this at F2. Corners, pretty good for this speed. Needs more exposure (as usual) if I want to get the noise down further, though my location isnt optimal. Id say the gear is settled enough to take on the road now, but it needs a bit of planning and motivation etc... 16x450 + 12x600 (4 hours total) in Ha Samyang 135mm f2, QSI583 Thanks for looking

Flaming Star and Tadpoles: 16x900 (Ha)

Bubble, Cave, Lobster, Wizard 16x450 (Ha)

Further testing.... Id say this lens is 100% sorted now: 4x900 (Ha) @ f2 KAF8300 sensor Poor sky conditions, but good enough for Ha

Star testing, Shedar - widefield with corner shots - all @ f2 Uncropped, unguided 60s x15 (KAF8300 sensor) Corners: TL, TR, BL, BR Not bad....

12x900 @f2.8 👍 It's very tenuous though, I'd say about as difficult as the IFN in terms of processing

Quite difficult, I knew there was Ha in the Hyades.... so decided to go looking for it. Needs more exposure and better processing (when I have the right amount of data!).

For that image (and most of my other stuff), the camera used was the Atik 383L+

NASA live stream here: Launch time: 12:20 GMT

More data from the same evening, deteriorating conditions but still acceptable: 8x600s