David's Astronomy Pages CCD Images - Session 668 (2019-02-25)

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C/2018 Y1 (Iwamoto) - Comet     Photometric Monitoring - Variables   - RX And, AM CVn, SY Cnc, YZ Cnc, R CrB,  CI Cyg, AM Her, SS Her, CY Lyr, U Mon, FO Ori, FU Ori, GK Per - U And, Z And, S Cyg, U Her, NV Ori, FG Sge, RR Tau attempts failed due to cloud     Astrometric Monitoring - Nearby Stars  - HH And, DX Cnc, 61 Cyg, Groombridge 34, LAMOST-HVS1, Teegardens Star - Barnards Star, CN Leo attempt failed due to cloud

- Full Night Session,  Duration 8.2hr Session operated in  fully automated mode, attended for first half / unattended for second half. Sky conditions  good, once inititally cloud had passed which had delayed start of session - Main aim of the session was general observing with mix of variable stars , nearby stars , comets and deep sky targets.  There was a few remaining Expolent host stars baselline onservations to make     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  8°C (max) dropping to 0 C min) - CCD Temperature:  -20°C & -25C / 83 & 85% av. power) - Notes from 2019-02-25 >>

C/2018 Y1 (Iwamoto) - Comet

C/2018 Y1 (Iwamoto) (passing through Auriga) Sun Distance 1.32 AU Earth Distance 0.59 AU (87.6 million km)		C/2018 Y1 (Iwamoto) - Detail Aligned on Comet.  (Stars appear trailed due to movement of comet)
CCD Image (50% size) 30s exposure (single frame), 3x3 binning, C Filter 2019-02-25 20:18 UT (#668004) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, linear scale, cropped) 4 x 30s exposure (average combine), 3x3 binning, C Filter 2019-02-25 20:18 UT (#668004-08) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
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