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First upload negative.

Calculad
Affiliation
British Astronomical Association, Variable Star Section (BAA-VSS)
Sat, 01/20/2024 - 20:09

I just uploaded a few first test images to VPhot and all went well except that the images are negatives.

It's on scope HHGSlarty42 , observer code WKE

Help please

cwt
Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 01/20/2024 - 20:15
Normal

You'll notice that they are all displayed as negative in the VPhot manual and the VPhot tutorial videos too.  That's normal operation.

Clearest skies,

Walt

Calculad
Affiliation
British Astronomical Association, Variable Star Section (BAA-VSS)
Sat, 01/20/2024 - 20:54
Thanks Walt,

Whoops. Very…

Thanks Walt,

Whoops. Very senior moment there. I was taken aback because they appear to be very noisy. Is it because I haven't calibrated them yet.

I was just running a few through VPhot to see if my exposures were near to optimum.

 

cwt
Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 01/20/2024 - 21:05
Could be calibration

Yes, they could definitely be noisy looking because they aren't calibrated yet.  That can make a big difference.  When I am taking my data live, it doesn't autocalibrate.  I do that after the fact.  When I look at the images as they are coming in to see how good they are (or aren't), I'll hit the calibrate button for that image.  It's still fun to watch the image get suddenly much cleaner and to see the stars pop out so much more clearly.

-Walt