David's Astronomy Pages Images - Session 639 (2018-12-03)

Images (S638)

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Images (S640)

Objects	Session Notes
38P/Stephan-Oterma - Comet     LAMOST-HVS1 - Hyperveolocity (HV) Star     UGC 2536 - Spiral Galaxy     Photometric Monitoring - Variables    - Z And, RR Tau, SU Tau   (ER UMa attempt failed due to cloud.)     Astrometric Monitoring - Nearby Stars   - DX Cnc, Groombridge 34, Teegardens Star	- Late Night Session (2.6 hours duration) . - Main aim of the session was acquire images of a selection of nearby stars, variable stars and deep sky objects     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature:  -0.5°C (minimum)  - CCD Temperature:  -25°C (71% av. power) - Notes from 2018-12-03 >>

38P/Stephan-Oterma - Comet

38P/Stephan-Oterma (passing through Cancer) Sun distance 1.62 AU.

CCD Image (50% size) 5 x 30s exposure ( average combine), 3x3 binning, C Filter  2018-12-04 00:30 UT (#639041-47) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on a guide star using TS 80mm APO + ZWO ASI178MC)

38P/Stephan-Oterma  - Detail

Annotated CCD Image (100% size, cropped) Image Details as above

Annotated CCD Image (100% size, cropped, logscale ) Image Details as above

38P/Stephan-Oterma  - Earlier Image (2018-11-08) (passing through Gemini) Sun distance 1.59 AU.

CCD Image (50% size) 26 x 30s exposure ( aligned on comet, average combine), 3x3 binning, C Filter  2018-11-08 03:32 UT (#636029-59) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on a guide star using TS 80mm APO + ZWO ASI178MC)

38P/Stephan-Oterma  - Earlier Image (2018-10-21) (passing through Gemini) Sun distance 1.61 AU.

CCD Image (50% size) 7 x 30s exposure (average combine), 3x3 binning, C Filter  2018-10-21 20:03 UT (#633206-12) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided using TS 80mm APO + ZWO ASI178MC)

38P/Stephan-Oterma - Earlier detail  (2018-10-21)

Annotated CCD Image (100% size, Cropped) Image details as above

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LAMOST-HVS1 - Hyperveolocity (HV) Star

LAMOST-HVS1 is the first hypervelocity star (HVS) discovered from the LAMOST spectroscopic survey (Zheng et al, 2014, see report ) .  It is a B-type star with a heliocentric radial velocity about 620 km/s, which projects to a Galactocentric radial velocity component of ~477 km/s. With a heliocentric distance of ~13 kpc and an apparent magnitude of ~13 mag, it is the nearest bright HVS currently known. With a mass of ~9Msun, it is one of the three most massive HVSs discovered so far. The star is clustered  (taken from report abstract

LAMOST-HVS1 (Cancer) Position of HVS1 star confirmed using Simbad & Aladin 10 Desktop  https://aladin.u-strasbg.fr/AladinDesktop/ (Catalogue Magnitude +12.98 (B) )

Annotated CCD Image (50% size) 3 x 20s exposure (average combine), 3x3 binning, C Filter  2018-12-04 00:03 UT (#639025-31) 12" LX200R  (at f/10.4) + ST-10XME

LAMOST-HVS1 - Detail

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

LAMOST-HVS1 - Earlier Image (2018-12-01)

Annotated CCD Image (50% size) 7 x 20s exposure (average combine), 3x3 binning, C Filter  2018-12-01 00:53 UT (#638075-81) 12" LX200R  (at f/10.4) + ST-10XME

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UGC 2536 - Spiral Galaxy

UGC 2536  (Perseus) UGC 2536 (mag +15.6) at centre of image. Bright star near bottom is SAO 38583 (mag +9.1)

CCD Image (50% size) 8 x 180s exposure ( average combine), 3x3 binning, C Filter  2018-12-04 00:15 UT (#639034-38 & 639087-89) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on a guide star using TS 80mm APO + ZWO ASI178MC)

UGC 2536 - Detail UGC 2536 (catalog mag +15.6),   PGC 11664 (catalog mag +15.1),  PGC 2182550 (catalog mag +16.8)

Annotated CCD Image (75% size, cropped) Image Details as above

UGC 2536  - Earlier Image (2018-08-31)

Annotated CCD Image (75% size, cropped) 5 x 180s exposure (average combine), 3x3 binning, C Filter  2018-08-31 00:44 UT (#622201-05) 12" LX200R  (at f/10.4) + ST-10XME (Autoguided on a guide star using TS 80mm APO + ZWO ASI178MC)

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