17 November, 2016

21:56

Dark frames of 30 Seconds are being exposed.

22:37

Slewed the telescope to V0725 Tau star. Since the star is comparatively low in the sky, it makes sense to start taking the I band data.

Focused the system to a near by 4.5 magnitude star.

00:16

Got 130 frames of I band with 15 seconds of exposure. Tonight i want to add V band as well.

Checked the exposure time of V0725 Tau star and it turns out that it is dim (as stars usually are) in V band. A 30 seconds of exposure gives me a peak pixel value of around 50k. Generally this is not a good value for photometry data but fortunately i have a NABG CCD so for me, it is all fine!

00:36

Guide star acquired and now my mount is being guided at 1 Hz, which is very nice indeed. The data is being collected now in V band.

01:14

After V data, V0725 Tau star is still in the eastern hemisphere. I am going to attempt some B band too.

As expected The star is dimmest in B band. A 60 seconds of exposure will do. Autoguiding is set to 0.4 Hz. 

01:22

Just Hit the "Take Series" knob in the Sky X Pro.

02:44

BVI done. Now time to take some flats. Arranged the scope for my flat acquisition setup. I would take at least 100 Flats for B and V filters. I already have a library for I filter.

04:58

Data reduced and all three BVI photometry bands are analysed. Submitted to AAVSO.