David's Astronomy Pages Images - Session 1018 (2022-06-06)

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Images (S1019)

Objects	Session Notes
C/2019 U5 (PANSTARRS) - Comet     AT 2022evv - CV Type Transient     Variable Stars (photometric monitoring) - SS Cyg, AM Her, BL Lac      Nearby Stars (astrometric monitoring) - Barnards Star	- Post midnight session (1.4 hours) Start delayed by software work / problems - Summer twilight conditions     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 7.0°C (min) - CCD Temperature:  -15°C - Notes from 2022-06-06 >>

C/2019 U5 (PANSTARRS) - Comet

C/2019 U5 (PANSTARRS) (passing through Bootes) Sun Distance 4.47 AU (approaching) Earth Distance 4.09 AU (611.6 million km) Comet is indicated by white cross-hairs		C/2019 U5 (PANSTARRS) - 2022-06-07 Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -59.49 arcsec/hr, Dec -24.45 arcsec/hr) Image affected by bright / uneven sky background
Annotated CCD Image (50% size, square root scale) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2022-06-07 00:20 UT (#1018022-24) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		Annotated CCD Image (100% size, square root scale, cropped) 9 x 60s exposure (average combine), 3x3 binning, C Filter 2022-06-07 00:24 UT (#1018022-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 U5 (PANSTARRS) on Comets 2022 Page >>

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AT 2022evv - CV Type Transient

AT 2022evv (Bootes) AT 2022evv (Type: CV) discovered 2022-03-16.697 UT by MASTER Alias: MASTER OT J153156.85+405008.7 Identified in Aladin/Simbad as 2MASS J15315678+4050075, a RR Type variable with a 1 mag variability over 1 hour) Discovery magnitude +15.7 (vs non-detection at mag limit of +18.5 in 2018-05-16)  ( TNS 2022evv )

AT 2022evv - 2022-06-07 (T+82.3d) Image below (2022-06-07.024) was taken 82.3 days after discovery of 2022evv Position of transient (visible) is shown by white cross-hairs Measured magnitude +14.94

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, C Filter 2022-06-07 00:37 UT (#1018034-38) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Images of AT 2022evv on Transients 2022 Page

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