Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

Recommended Posts

Preliminary results from a 3h40m run on V799 Aur last night - this is a HADS star with period 1.83 hrs. Autofocus had a slight blip in the middle where there's an 8 min gap or so, but got the period, and the slightly odd shape nicely. AIJ complained about the red ref star - need to check saturation levels on that. These were all 7sec exposures - unflitered exposures need to be so short, even at mag 10.something to stop saturating the stars!

Measurements.png.c9b07e99ea0f5146bc74909c5f88ddda.png

Link to comment
Share on other sites

Wow - that is brilliant and an unusual shape. I wonder if it is multiperiodic although it is not marked as such on the HADS spreadsheet.

With variable stars there is no need to worry about focusing, in fact some defocus slightly to avoid saturation, as long as neighbouring stars don't start to merge.

Congratulations on your first HADS

Dave

Link to comment
Share on other sites

Thanks Dave - yep, I'm less concerned about the autofocus routines now - it can be an issue on this scope if there's significant temp changes, but last night started cold and stayed that way! :D

Very interesting shape, hopefully can contribute this data to the HADS work when I hear from Patrick.

Link to comment
Share on other sites

Why wait, He's already expecting data from you. I usually send the BAA data file. He prefers that you do not submit the data to BAA or AAVSO straight away so that he can do his stuff first. I was advised 3 months but I have only waited a month as otherwise I would forget altogether.

Dave

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.