American Association of Variable Star Observers (AAVSO)
Sat, 01/16/2021 - 23:54

Am learning the ropes and studying V0346 ORI.  I have attached a light curve and would appreciate any help.  In particular, the comp star 000-BKG-472 seems to have more variablity than my target.  I can not find additional info on 000-BKG-472.  Graph shows some seeing issues towards end of series.  Thanks

bryan e martin

V0346 ORI light curve

American Association of Variable Star Observers (AAVSO)

Hi Byran

I often notice the same effects. Your comps seems to be changing < 0.1 mags.

Not at all expert at this sort of thing, but have noticed a couple things.

My comps usually "vary"  on a scale of ~ 0.05 mag or less.

Most of it seems to be a function of where they are on the imager, which tells me that my flats are not ideal. 

Doing exoplanet runs through the meridian flip can reveal things you may have not seen before.

Long time series with good seeing and good SNR while keeping the stars on the same pixels helps a lot.