Optical observations of novae PGIR22gjh, U Sco and FQ Cir

ATel #15511; Filipp Romanov (amateur astronomer, Russia)
on 12 Jul 2022; 06:27 UT
Credential Certification: Kirill Sokolovsky (kirx@scan.sai.msu.ru)

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I observed heavily reddened nova PGIR22gjh = AT 2022iev (ATel #15348) remotely using 0.61-m f/6.5 corrected Dall-Kirkham robotic telescope (Lane, 2018, RTSRE, 1, 119) of Burke-Gaffney Observatory (BGO) in Saint Mary's University (Halifax, Nova Scotia, Canada) with Astrodon photometric Cousins I filter. Measured magnitudes:

 
Julian Date / Calendar date / Magnitude / Error 
2459705.733264 2022 May 06.23326 15.178 Ic +/- 0.051 
2459707.738449 2022 May 08.23845 15.250 Ic +/- 0.049 
2459709.727859 2022 May 10.22786 15.369 Ic +/- 0.067 
2459712.744722 2022 May 13.24472 15.497 Ic +/- 0.064 
2459713.773495 2022 May 14.27349 15.469 Ic +/- 0.067 
2459720.696366 2022 May 21.19637 15.878 Ic +/- 0.072 
2459723.694248 2022 May 24.19425 16.327 Ic +/- 0.091 
2459725.705764 2022 May 26.20576 16.539 Ic +/- 0.110 
2459729.698507 2022 May 30.19851 16.461 Ic +/- 0.114 
2459731.682002 2022 June 01.18200 16.604 Ic +/- 0.120 
2459737.649931 2022 June 07.14993 17.060 Ic +/- 0.185 

The exposure times were 480 seconds for the first image and 900 seconds for the others. I measured the position of the nova in the images:

 
R.A.: 18:08:42.68, 
Dec.: -19:21:55.9. 

The declination differs by 2.6 arcseconds from the discovery position in ATel #15348. The images are available here: https://observatory.smu.ca/~bgo/research/PGIR22gjh_May-June2022.jpg

I also observed the recurrent nova U Sco near its maximum brightness during the 2022 outburst (ATel #15417) remotely using the aforementioned telescope of the BGO, with Astrodon photometric Johnson/Cousins filers B, V, Rc and Ic, with 5 seconds exposure time. Measured magnitudes:

 
Julian Date / Calendar date / Magnitude / Error 
2459737.593582 2022 June 07.09358 7.794 V +/- 0.009 
2459737.597703 2022 June 07.09770 8.038 B +/- 0.020 
2459737.600874 2022 June 07.10087 7.447 Rc +/- 0.017 
2459737.601985 2022 June 07.10199 7.173 Ic +/- 0.022 

I observed the transient TCP J15244460-6059200 = FQ Circini (very fast classical nova according to ATel #15473, CBET #5138) remotely using telescope T30 (0.50-m f/6.8 reflector of iTelescope.Net in Siding Spring Observatory, Australia) with Astrodon photometric Johnson/Cousins filers B, V, Rc and Ic, exposures were 60 seconds. Measured magnitudes:

 
Julian Date / Calendar date / Magnitude / Error 
2459756.179853 2022 June 25.67985 11.28 V +/- 0.02 
2459756.182636 2022 June 25.68264 12.02 B +/- 0.01 
2459756.185324 2022 June 25.68532 10.42 Rc +/- 0.03 
2459756.188435 2022 June 25.68843 9.69 Ic +/- 0.003 

Link to my color image (stacked 3x60 sec. with V, B and Ic filters for green, blue and red channels): https://www.flickr.com/photos/filipp-romanov/52182779263/

For all measurements I used the magnitudes of the comparison star from the AAVSO star charts. Time is indicated in UT, for the middle of exposures.