David's Astronomy Pages Images - Session 665 (2019-02-20)

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C/2018 Y1 (Iwamoto) - Comet     LBV2019abn - LBV in M51     M51 - Spiral Galaxy (Whirlpool Galaxy)     Photometric Monitoring - Variables   - TV Cas, RZ LMi, RR Leo, ER UMa     Astrometric Monitoring - Nearby Stars  - None

- Evening - Night Session,  Duration 8.2hr Session operated in fully automated mode, but monitored in part over a remote connection.  Sky conditions  moderate (bright sky due to moon)  Significant dew midway into session - Main aim of the session was to acquire some light curve data for several variables over the course of a few hours with aim of detecting variation associated with eclipsing binary stars , RR Lyr stars and dwarf nova, and acquire images of new comet C/2018 Y1 (Iwamoto)     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  4°C (minimum), 9.5°C (maximum) - CCD Temperature:  -15 / 69% av. power) - Notes from 2019-02-20 >>

C/2018 Y1 (Iwamoto) - Comet

C/2018 Y1 (Iwamoto)  (passing through Gemini) Sun Distance 1.30 AU Earth Distance 0.44 AU (65.3 million km)		C/2018 Y1 (Iwamoto) - Detail
CCD Image (50% size) 30s exposure (single frame), 3x3 binning, C Filter 2019-02-20 22:53 UT (#665138) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size,cropped) Image details as above
Stacked Frames Aligned on comet  (stars appear trailed)
CCD Image (50% size, log scale) 7 x 30s exposure (average combine), 3x3 binning, C Filter Aligned on comet 2019-02-20 22:53 UT (#665137-43) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) Image details as above
More Images of C/2018 Y1 (Iwamoto)

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LBV2019abn - LBV in M51

LBV2019abn in M51 (Canes Venatici) LBV 2019abn discovered 2019/01/22.555 by ATLAS ( See LBV 2019abn images sub-page on Rochester Supernova site ) Image below (2019-02-20.990) was taken 29.4 days after discovery LBV's are massive unstable supergiant stare, also known as S Doradus variables> P Cygni is an example of LBV from our own galaxy

Annotated CCD Image (50% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2019-02-20 23:45 UT (#665168-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

LBV 2019abn - Detail

Annotated CCD Image (100% size, linear scale, cropped) Image details as above

M51 Detail - Earlier Image (2008) No sign of any object at the position of the later LBV

CCD Image (184% size, linear scale, cropped) 5 x 180s exposure (av. combine), 2x2 binning, C Filter 2008-02-27 23:59 UT (#270263-69) 8" LX200 Classic + ST-7E

Images of LBV 2019abn (M51) on LBV Transients Page >>

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M51 - Spiral Galaxy (Whirlpool Galaxy)

M51 (Canes Venatici)
CCD Image (100% size, linear scale, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter 2019-02-20 23:45 UT (#665168-72) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, logscale, cropped) Image details as left

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