Too hot to cool

[iapa]

• location 55N, 3W
• date/time 202208090130hrs
• ambient temp +16ºC
• camera temp -15ºC

+16ºC midday is warm for here at the height of summer..

[Pompey Monkey]

Sometimes we are lucky to get to 0 degrees C at our remote setup in Spain. It regularly goes over 40 C in the daytime, and can stay in the mid to high twenties at night!

[ONIKKINEN]

If you've got one of the newer Sony sensor cameras (533/571/others) you dont need to cool down nearly as much to get a relatively noise free image. 0 is already good and +5 is not terrible either.

[iapa]

It's 294 & 183 sensors I have, with a recent set of -20˚C darks and bias for all the cameras.

The main things is is that it's hot in Central Belt overnight - and I have three nights marked as being clear with potential for 15hrs hours imaging time.

Ach well, once I got the images I'll stick the cameras int he fridge

[jacko61]

@iapa

I'm at pretty much the same coordinates as you give or take a minute or two and I had no problem last night cooling my ASI2600 to -15 which seems cold enough for my purposes. I crank up the camera first and start it cooling straightaway in APT. By the time I've aligned on my target, run a couple of test shots and got guiding sorted it's almost always cooled enough. 

Graeme 

[900SL]

It's been a balmy 47c here in Saudi this week, now dropping to a more bearable 45c. I don't use the 533MC in this heat, it's too much and will shorten the life expectancy. I did use the D5600 the other evening with LENR every frame and it seemed to work pretty well, was around 40c at the time

[geeks]

Mine will drop to -10 no problem at all in these temps (Altair 533Protech)

Having done some reading it seems pretty pointless cooling most sensors past -10c

[geeks]

1 minute ago, 900SL said:

It's been a balmy 47c here in Saudi this week, now dropping to a more bearable 45c. I don't use the 533MC in this heat, it's too much and will shorten the life expectancy. I did use the D5600 the other evening with LENR every frame and it seemed to work pretty well, was around 40c at the time

I don't miss the heat of being out there, like walking into a fan oven when leaving the hotel/compound

[900SL]

Yes it's an oven door heat in high summer. A malevolent mercury arc light, blinding white. In Riyadh you don't sweat, you sublimate directly into a salty crusty husk. 

It's scorchio! 

 

[iapa]

49 minutes ago, jacko61 said:

@iapa

I'm at pretty much the same coordinates as you give or take a minute or two and I had no problem last night cooling my ASI2600 to -15 which seems cold enough for my purposes. I crank up the camera first and start it cooling straightaway in APT. By the time I've aligned on my target, run a couple of test shots and got guiding sorted it's almost always cooled enough. 

Graeme 

I was more moaning about the fact all my darks are at -20˚C

 

[jacko61]

17 hours ago, iapa said:

I was more moaning about the fact all my darks are at -20˚C

 

Ah, gotcha.  My ASI533 dark library was all at -10 but I've gone to -15 for the ASI2600. I hadn't considered it might get so warm I can't cool to that temp. 

Graeme

[alacant]

We use DSLRs with sensor temperatures well above 30º. The images turn out fine.

Cheers