David's Astronomy Pages CCD Images - Session 1123 (2023-07-22)

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Objects	Session Notes
AT 2022fnb - CV Type Transient AT 2023dwm - CV Type Transient     Variable Stars (photometric monitoring) - None      Nearby Stars (astrometric monitoring) -  61 Cyg	- All night session. Images only successfully captured from 3 targets. Other targets failed due to a dome pointing issue that caused the telescope view to be oculuded by the dome roof.     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 8.5°C (min) - CCD Temperature:  -15° C - Notes from 2023-07-22 >>     -

AT 2022fnb - CV Type Transient

AT 2022fnb (Cepheus) AT 2022fnb (Type: CV) discovered 2022-03-30.875 UT by MASTER Alias: MASTER OT J222553.47+602042.5 Discovery magnitude 13.2 (Clear filter) vs Last Non-Detection at limiting mag 18.9  ( TNS 2022fnb)

AT 2022fnb - 2023-07-22 (T+479.1d) Image below (2023-07-22.990) was taken 479.1 days after discovery of 2022fnb Position of earlier reported transient (fading slowly but still distinct) is shown by white cross-hairs Measured magntitude + 13.17

Annotated CCD Image (100% size, linear scale, cropped) 5 x 60s exposure (average combine), 3x3 binning, Clear Filter 2023-07-22 23:49 UT (#1123022-26) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

AT 2022fnb - Reference Image (DSS2 Color)

Images of AT 2022fnb on Transients 2022 Page >>

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AT 2023dwm - CV Type Transient

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