David's Astronomy Pages CCD Images - Session 772 (2020-04-22)

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Session Notes

88P/Howell  - Comet C/2018 N2 (ASASSN) - Comet C/2019 Y4 (ATLAS)  - Comet     Basel 10 - Open Cluster     NGC 3245 - Spiral Galaxy (Herschel I-86)     UGC 8040 - Spiral Galaxy (PGC 43951)     Variable Stars (photometric monitoring)   - RX And, AM CVn, SY Cnc, R CrB, CI Cyg, S Cyg, SS Cyg, AM Her, SS Her, U Her, RZ LMi, BL Lac, CY Lyr, DY Per, Sge V     Nearby Stars (astrometric monitoring)  - HH And, Barnards Star, Groombridge 34, LAMOST-HVS1

- All night session (5.9 hours total). - Main aims of the session was to acquire images of a selection of deep sky and comet objects     - 12" LX200 + ST-10XME for imaging - TS 80mm APO + ZWO ASI178MC for guiding & imaging - Ambient Temperature: 1°C (min) (Dew heaters on auto) - CCD Temperature:  -15°/-20°C  (57%/63% av. power) - Notes from 2020-04-22 >>

88P/Howell  - Comet

88P/Howell - 2020-04-22 (passing through Virgo) Sun Distance 2.09 AU Earth Distance 1.11 AU (165.9 million km)		88P/Howell - 2020-04-22, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -41.99 arcsec/hr, Dec 10.91 arcsec/hr)
CCD Image (50% size, square root scale) 2 x 60s exposure (average combine), 3x3 binning, C Filter 2020-04-22 23:18 UT (#772080-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 8 x 60s exposure (average combine), 3x3 binning, C Filter 2020-04-22 23:20 UT (#772078-86) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of 88P/Howell on Comets 2020 Page >>

88P/Howell - 2020-04-22

CCD Image (100% size, square root scale, cropped) 2 x 60s exposure (average combine), 3x3 binning, C Filter 2020-04-22 23:18 UT (#772080-81) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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C/2018 N2 (ASASSN)  - Comet

C/2018 N2 (ASASSN) - 2020-04-23  (passing through Cassiopeia) Sun Distance 3.50 AU (receeding) Earth Distance 4.08 AU (610.5 million km)		C/2018 N2 (ASASSN)  - 2020-04-23 Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra 49.15 arcsec/hr, Dec 42.92 arcsec/hr)
Annotated CCD Image (50% size, square root scale) 3 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-23 00:48 UT (#772159-61) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, square root scale, cropped) 9 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-23 00:51 UT (#772159-67) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2018 N2 (ASASSN) on Comets 2019 Page >>
Images of C/2018 N2 (ASASSN) on Comets 2020 Page >>

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C/2019 Y4 (ATLAS)  - Comet

C/2019 Y4 (ATLAS) - 2020-04-22 (passing through Camelopardalis) Sun Distance 1.05 AU (approaching) Earth Distance 0.97 AU (144.5 million km)		C/2019 Y4 (ATLAS)  - 2020-04-22, Detail Autoguided on offset star using PHD2 with Lock Shift set at the comet's rate of motion (Ra -159.28 arcsec/hr, Dec -54.94 arcsec/hr)
CCD Image (50% size, square root scale) 2 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-22 22:13 UT (#772040-41) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2		CCD Image (100% size, log scale, cropped) 22 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-22 22:23 UT (#772040-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2
Images of C/2019 Y4 (ATLAS) on Comets 2020 Page >>

C/2019 Y4 (ATLAS) - False Colour, 2020-04-22

False Color CCD Image (50% size, log scale) 22 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-22 22:23 UT (#772040-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

C/2019 Y4 (ATLAS) - 2020-04-22

CCD Image (150% size, linear scale, cropped) 22 x 45s exposure (average combine), 3x3 binning, C Filter 2020-04-22 22:23 UT (#772040-63) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

C/2019 Y4 (ATLAS) -  2020-04-22 Composite image showing 2.13 arc mins motion of comet over a 2.42 hour period (53 arcsec/hr,  0.352 deg/day) Possibility that comet has brightened over 2.4 hour period ?

Composite CCD Image (100% size, square root scale, cropped) Average of 2 frames each 2 x 45s exposure , 3x3 binning, C Filter 2020-04-22 22:13 UT (#772040-41) 2020-04-23 00:38 UT (#772154-56) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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Basel 10 - Open Cluster

Basel 10 (Perseus) SAC Basel 10,  Saguaro Astronomy Club Database Note: Target imaged using target offsets -5.0' W, -1.1' N in order to position the centre of the star clustering at the centre of the image.

CCD Image (70% size, linear scale) 8 x 30s exposure (average combine), 3x3 binning, C Filter 2020-04-23 01:58 UT (#772232-39) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

Basel 10- Earlier Image (2020-02-12) Although the image is centered on the target object 'SAC Basel 10' in TheSky6 the center of star clustering appears to lie to the left of center. Note: Target to be re-imaged in a follow-up session using target offsets -5.0' W, -1.1' N

CCD Image (70% size, linear scale) 7 x 30s exposure (average combine), 3x3 binning, C Filter 2020-02-12 20:21 UT (#751087-94) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

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NGC 3245 - Spiral Galaxy (Herschel I-86)

NGC 3245 / H I-86 (Leo Minor) Herschel 400 Object

CCD Image (50% size, log scale) 3 x 120s exposure (average combine), 3x3 binning, C Filter 2020-04-22 21:47 UT (#772026-30) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

NGC 3245  - Detail

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

Negative CCD Image (100% size, log scale, cropped) Image details as above

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UGC 8040 - Spiral Galaxy (PGC 43951)

UGC 8040 (Ursa Major) Flat Galaxy Atlas Object [ Flat Galaxies ]  UGC 8040 / PGC 43951 (catalog mag +14.5) with adjacent galaxies : PGC 43996 (catalog mag +16.0), PGC 214038 (very faint)

Annotated CCD Image (50% size, log scale) 2 x 180s exposure (average combine), 3x3 binning, C Filter 2020-04-22 22:45 UT (#772067-68) 12" LX200R (at f/10.4) + ST-10XME Auto-guided using TS 80mm APO, ZWO ASI178MC & PHD2

UGC 8040  - Detail Target to be rescheduled to bring out detail in adjacent galaxies

CCD Image (125% size, log scale, cropped) Image details as above

UGC 8040  - Negative PGC 214038 is just visible as faint smudge above-right of UGC 8040

Negative CCD Image (125% size, log scale, cropped) Image details as above

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