CMOS image sensors

[wimvb]

2 hours ago, vlaiv said:

Not sure what would be misleading in that?

Many people interpret this graph as meaning that there is a large decrease in dark current going from 15 to 0 C, but hardly any decrease going from 0 to - 15 C. While we both know that the dark current keeps on decreasing in the same manner.

A log scale would have been better, imo. 

[vlaiv]

42 minutes ago, wimvb said:

Many people interpret this graph as meaning that there is a large decrease in dark current going from 15 to 0 C, but hardly any decrease going from 0 to - 15 C. While we both know that the dark current keeps on decreasing in the same manner.

A log scale would have been better, imo. 

Yes, sometimes log scale shows stuff better, but sometimes it is harder to read. I don't like log scale used for full well capacity - no way of actually reading anything meaningful off of it

 

[Adam J]

2 minutes ago, vlaiv said:

Yes, sometimes log scale shows stuff better, but sometimes it is harder to read. I don't like log scale used for full well capacity - no way of actually reading anything meaningful off of it

 

Yes a Log scale is something for scientists and engineers and not something that is useful to the general public. 

Also why are we not suggesting the ASI2600MC Pro in this thread? Or is that out of budget for the OP?

Edited January 13, 2020 by Adam J

[Allinthehead]

43 minutes ago, Adam J said:

ASI2600MC Pro in this thread? Or is that out of budget for the OP?

It's only better on paper and quite a bit more expensive.

Have you come across any images taken with one? 

[vlaiv]

1 hour ago, Adam J said:

Yes a Log scale is something for scientists and engineers and not something that is useful to the general public. 

Also why are we not suggesting the ASI2600MC Pro in this thread? Or is that out of budget for the OP?

See this post:

Budget limited to ~ £900.

[Adam J]

7 hours ago, Allinthehead said:

It's only better on paper and quite a bit more expensive.

Have you come across any images taken with one? 

No but I have of the 533 which is similar technology and intact the 2600 should be even better due to the 16bit a/d. 

[Allinthehead]

16 minutes ago, Adam J said:

No but I have of the 533 which is similar technology and intact the 2600 should be even better due to the 16bit a/d. 

Those images taken with the 533 look very promising indeed. 

 

[Gan]

Thanks all for a very helpful discussion. Sorry for not responding sooner. I was away for a month on job and just returned. I guess now its the decision time!

[Gan]

Hi Guys

Finally got my ASI 071! I need some help/guidance please regarding switching from DSLR to CMOS astrophotography.

1. SOFTWARE:

As I am completely new to CCD/CMOS astrophotography, please could someone suggest best software to take few nice images of DSO. I am not aware if there are any standalone imaging software ( like Backyard EOS for Canon DSLR).

I am familiar with sequencing software like APT, SGPro and NINA etc. These are very nice programmes but I feel their main concentration is on  the whole sequence set up rather than just imaging side of it. I will perhaps get to grips with these eventually. But in the meantime if I want to just experiment with the new camera ( ASI 071) and understand the camera better, is there any software that does just that?

2. SETTINGS

What are the ideal settings for the CMOS cameras for DSO imaging. For instance in DSLR imaging your parameters are

      i. exposure duration  ( either long exposure with guidance e.g. 180 sec or more or shorter exposure with lot more images to be stacked in post-processing

      ii. ISO : 3200 or 6400 or even higher etc.

Help and guidance please. Much appreciated in anticipation

Gan

 

My Gear: Edge HD8, NEQ6 Pro, QHY5L II for guiding, Celestron focuser

[DaveS]

You could look at AstroArt 7, it does pretty much everything from acquisition through to processing, including guiding and plate solving.

[Gan]

certainly. will try the demo version. Thank you