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Dedicated astro-camera suggestion

micvon
06 Jul, 2019 17:48
Hello,
I'm thinking to move from a dslr to a dedicated astrocamera. For a series of reasons - mainly budget  :-) - I'm thinking of a colour cooled camera rather than a monochrome. I've kind of settled  for the 294 sensor which fits well with my telescope ( an f/4 8" newtonian).  I know ZWO, Altair Astro, and QHY  all manufacture a TEC cooled camera with the Sony 294 sensor. Is there any difference between these three products? I've read around that the ZWO had some problems with uniform cooling . Any direct experience will be appreciated.
Thanks

Michele
Edited 07 Jul, 2019 19:05
xordi
06 Jul, 2019 18:22
I have an ASI version and it has only a minor cooling issue. If the cooler works near to 100% it can create some dump on the chip (or on the cover glass).
Sofar it occurred only on the very hot summer nights, when I wanted to reach -10, -15., otherwise it works quite ok, quick and stable. I think the reason could be the warming house.
An other annoying issue is the ampglow on the edge, however with a careful calibration it disappears.
Edited 06 Jul, 2019 18:23
gnomus
07 Jul, 2019 13:13
Whilst the OSC will be cheaper initially, I wonder from reading between the lines of your post if you will soon end up hankering after the flexibility that mono plus filters can give you.  You may find it turns out more expensive in the long run trying to save some money now.   smile
carastro
07 Jul, 2019 17:35
I agree.

Carole
micvon
07 Jul, 2019 19:24
Hi Xordi,
thanks for the very useful information. That was ideed the type of  details I was looking for.

Cheers

Michele
koten90
08 Jul, 2019 05:00
Pay attention to sampling Michele. Little pixels and long focal lenght is a very hard to guide combination
 
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