David's Astronomy Pages Images - Session 596 (2016-02-11)

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Images (S597)

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Session Notes

81/P Wild - Comet     NGC 2943 - Spiral Galaxy NGC 2988 / NGC 2991 - Spiral Galaxies NGC 3162 - Spiral Galaxy     UGC 3738 - Spiral Galaxy (SN 2016ys attempt)     Photometric Monitoring - Variables   - RX And, U And, Z And, SS Cyg, U Gem, BL Lac, SZ Lyn, CN Ori, CZ Ori, FO Ori, FU Ori, NV Ori, DY Per, GK Per, ER UMa     Astrometric Monitoring - Nearby Stars   - None

- Evening session (3.0 hrs duration). Clear skies. Wind 3-6 mph. - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature:  -2.0°C (minimum) - CCD operation -30°C (at 63% average cooling).  - Planned objectives of the session were to monitor selected variable and nearby stars. Images were also taken of some comets and galaxies in Leo.   Unfortunately the current bright comet, C/2013 US10 (Catalina), lay above hard-coded declination limit (where camera would be in danger of hitting the mount's fork base).   Images affected by wind shake.

81/P Wild - Comet

81/P Wild (passing through starfield in Taurus) Sun distance 2.19 AU

Annotated CCD Image (50% size) 5 x 30s exposure (average combine), 3x3 binning, C Filter 2016-02-11 20:11h UT (#596077-81) 12" LX200R  (at f/10.4) + ST-10XME

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NGC 2943 - Spiral Galaxy

NGC 2943 and adjacent galaxies (Leo)

Annotated CCD Image (50% size) 2 x 90s exposure (average combine), 3x3 binning, C Filter 2016-02-11 21:34h UT (#596176-77) 12" LX200R  (at f/10.4) + ST-10XME

NGC 2943 - detail

CCD Image (cropped) Image details as above

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NGC 2988 / NGC 2991 - Spiral Galaxies

NGC 2988 / NGC 2991 (Leo) with adjacent galaxy NGC 2994

Annotated CCD Image (50% size) 90s exposure (single frame), 3x3 binning, C Filter 2016-02-11 21:34h UT (#596169) 12" LX200R  (at f/10.4) + ST-10XME

NGC 2988 / NGC 2991 - detail

CCD Image (cropped) Image details as above

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NGC 3162 - Spiral Galaxy

NGC 3162 (Leo)

CCD Image (50% size) 2 x 90s exposure (average combine), 3x3 binning, C Filter 2016-02-11 22:07h UT (#596190-93) 12" LX200R  (at f/10.4) + ST-10XME

NGC 3162 - detail

CCD Image (cropped) Image details as above

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UGC 3738 - Spiral Galaxy (SN 2016ys attempt)

UGC 3738 (Leo) (alt name : PGC 20384)

CCD Image (100% size, cropped) 90s exposure (single frame), 3x3 binning, C Filter 2016-02-11 21:28h UT (#596165) 12" LX200R  (at f/10.4) + ST-10XME

UGC 3738 - detail Wind shake or periodic error make it impossible to confirm the supernova 2016ys in the image below which was taken 14.5 days after discovery SN 2016ys (= ASASSN-16ay, Type Ia, z=0.028) was discovered 2016/01/28.410  by All Sky Automated Survey for SuperNovae (ASAS-SN); Gagliano, Post, Puckett, Newton  (Rochester Supernova site | Discovery Image )

Negative CCD Image (200% size, cropped) Image details as above

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