Second(?) light ZWO asi178mm

[Yawning Angel]

Continuing my adventure with the loaned TAL 100 PST stage 2. A bit windy today, but all good practice. The asi178 isn't blisteringly fast at 30 fps <typo fixed>, but the results are crisp

I've been setting it running taking 500 frames every 3 minutes and letting it do a couple of hours whilst doing lockdown things (mainly home schooling the hobbits!)

Edited April 22, 2020 by Yawning Angel
typo

[tooth_dr]

That surface is so tactile!  Do you think 500/3 = almost three minutes per video may result in blurring of the proms?

[MarkAR]

Lovely image.

[Yawning Angel]

44 minutes ago, tooth_dr said:

Do you think 500/3

Typo...500 frames @ 30fps, sequenced to capture every 3 mins. The softness is more than likely down to the processing 😳

[tooth_dr]

1 minute ago, Yawning Angel said:

Typo...500 frames @ 30fps, sequenced to capture every 3 mins. The softness is more than likely down to the processing 😳

I wasnt getting at that lol, but I thought something was odd at 3FPS!  Thats what I was getting on my old PC with my 178MC trying some solar the other day, so I just gave up on it and went back to a smaller sensor which gave me a better FPS.

[Yawning Angel]

It made me look again at the data and I think this one comes out a little better. Captured about 30 minutes later, I've combined it with the same surface capture frame

[tooth_dr]

9 minutes ago, Yawning Angel said:

It made me look again at the data and I think this one comes out a little better. Captured about 30 minutes later, I've combined it with the same surface capture frame

It could have been the seeing or anything at that point but this is very nice and looks better, more detail in the proms. 

[Pete Presland]

The 2nd image is much sharper. 30 FPS, does seem quite slow to me. What is exposure time when capturing?

[Yawning Angel]

1 hour ago, Pete Presland said:

What is exposure time when capturing?

I think it would have been 20ms?

[Pete Presland]

I would have thought you would be nearer 50 FPS with that exposure. My old DMK21au618 can do a 1000 frames in less than a minute.

[Yawning Angel]

6 hours ago, Pete Presland said:

nearer 50 FPS

The 178 at full resolution gets about 30fps. It's the trade off for it being 6 megapixels. It's not the ideal camera for solar, but its the most suitable I own. ROI it will speed up, so I've been playing with that today, but high cloud has made it all a bit mushy

[Pete Presland]

I wonder if you going mention "full resolution" that would make sense.

[richard ashbee]

Are there any other cameras that could be considered?

[Yawning Angel]

There are a couple I’d consider : The asi290 is blisteringly fast , and the asi174 has global shutter - but since the scope is only loaned, I’m not really looking to  invest😀

The asi120mm I have is faster, but lower res and nosier. I started there, and then swapped to the 178

Edited April 28, 2020 by Yawning Angel