Affiliation
British Astronomical Association, Variable Star Section (BAA-VSS)
Sat, 10/28/2023 - 17:48
Is it not allowed to upload images to the forum.
I don't seem to be able to upload any files.
There is an upload button but hovering on it just gives a no entry sign.
Kevin;
Currently, you can neither paste images into a forum comment box nor attach files to a forum post. Security reasons!
Member Only Choice Course Forums are an exception to the rule about attached files so as to accommodate learning.
Ken
PS: You know from your VPhot Choice Course that you can attach files into that member only forum.
You can copy and past URL links (to private files) into the regular forum posts.
Ah OK. Thanks Ken,
I have just taken a series of flats on my new set-up and wanted to show one of them to "them that knows abut these things"
They have lots of dust doughnuts and look pretty ugly compared to others I have seen.
All filters are the same so I wondered about the state of the detector window and whether a puff off air might help.
Kevin
Kevin:
"Lots" is a very relative term! A soft optics brush with a bulb puffer may help on the filters.
I would caution that if you try canned air, you may get a burst of propellant/residue that may do more harm than good. I do not use canned air on my filters/camera chip. Others may disagree?
Ken
PS: If you had an image/screenshot of the flat archived on a personal storage cloud folder, you could post the URL link into the comment box.
Thanks Ken,
Other flats I have seen have 1 or 2.
Mine are covered, they even overlap covering the image. There must be 50-60
Yes only a blower brush would be used.
As I said because flats through B and V are the same I assumed the dust is on the detector window. Is this a correct assumption
Regards
Kevin
Kevin:
This link it to a dust donut size calculator.
https://astronomy.tools/calculators/dust_reflection_calculator
Ken