David's Astronomy Pages Images - Session 585 (2015-04-20)

Images (S584)

Images Sessions

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Images (S586)

Objects

Session Notes

Vega - A0V Star P Cyg - Star     IC 883 - Irregular Galaxy (ARP 193) IC 3862 - Spiral Galaxy (ARP 265) - to be repeated IC 4182 - Irregular Galaxy IC 4271 - Spiral Galaxy (ARP 40)     NGC 4535 - Spiral Galaxy (Herschel II-500) NGC 4627 - Elliptical Galaxy  (companion to NGC 4631) NGC 4725 - Spiral Galaxy (Herschel I-84) NGC 4789 - Spiral Galaxy (UGC 8024) NGC 5112 - Spiral Galaxy NGC 5227 - Spiral Galaxy with SN ASASSN-15fz NGC 5371 - Spiral Galaxy NGC 5421 - Galaxy (ARP 111) NGC 6207 - Spiral Galaxy (Herschell II-701)     UGC 5889 - Galaxy (NGC 3377A) UGC 8331 - Irregular Galaxy (M51 Group) UGC 8548 - Spiral Galaxy (ARP 36) UGC 8560 - Spiral Galaxy (ARP 183)     Photometric Monitoring - Variables   - R CrB, CI Cyg, SS Cyg, U Gem, RZ LMi, DY Per, GK Per, ER UMa     Astrometric Monitoring - Nearby Stars   - Barnards Star, 61 Cyg

- All night session (6.3 hrs duration).   Good conditions. A faint aurora display occured during the session period, but was not recognised until AllSky images were subsequently analysed. - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature:  tube temperature fell to 0°C (minimum) - CCD operation -30°C (at 74% average cooling).  - Planned objectives of the session were to monitor selected variable stars & nearby stars and to take gallery images of selected deep sky objects  in Canes Venatici, Coma Berenices and Virgo. -

Vega - A0V Star

Vega (Lyra)
CCD Spectra Image (Star Analyser 200) (Image rotated & cropped) 1 x 0.2s exposure, 2x2 binning, S Filter 2015-04-21 03:43 h UT (#585269-73) 12" LX200R  (at f/10.4) + ST-10XME Dispersion 25.44 A/px.		CCD Spectra Image (150%) Image details as left
Vega - Earlier Spectral Image (2008)
CCD Spectra Image (Star Analyser 100) 3 x 0.5s, 1x1 binning 2008-05-07 23:01hUT (#286046-48) 8" LX200 + ST-7e Dispersion 33.6 A/px		CCD Spectra Image (200%) Image details as left

Vega Spectra Analysis

Profile:   1 x 0.2s, 2x2 binning, #585269-73 (calibrated on H alpha line & dispersion 25.44 A/px) Reference: Example Raw Vega profile supplied with RSpec

Analysis made using RSpec

Vega Spectra Calibrated

Profile:  5 x 5s, 2x2 binning, #585280 (non-linear calibration - av. dispersion 25.5 A/px)

Calibration & labelling made using RSpec

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P Cyg -  Star

P Cyg (Lyra)
CCD Spectra Image (Star Analyser 200) (Image rotated & cropped) 5 x 5s exposure, 2x2 binning, S Filter 2015-04-21 03:38 h UT (#585280) 12" LX200R  (at f/10.4) + ST-10XME Dispersion 25.44 A/px.		CCD Spectra Image (150%) Image details as left
P Cyg - Earlier Spectral Image (2008)		Spectral Emission Lines in P Cyg (Cygnus)
CCD Spectra Image (Star Analyser 100) 3 x 10s, 1x1 binning,  2008-05-08 01:16hUT (#286177-79) 8" LX200 + ST-7e Dispersion 33.6 A/px		CCD Spectra Image (200%) Image details as left

P Cyg Spectra Analysis

Profile:  0.2s, 2x2 binning, #585280 (calibrated on H alpha line & dispersion 25.44 A/px) Reference: Example Raw Vega profile supplied with RSpec

Analysis made using RSpec

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IC 883 - Irregular Galaxy (ARP 193)

IC 883 / ARP 193 (Canes Venatici)

CCD Image (Linear Scale, 50% size) 6 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 00:54 h UT (#585119-25) 12" LX200R  (at f/10.4) + ST-10XME

IC 883 / ARP 193 - detail

CCD Image (Square Root Scale, 100% size, cropped) Image details as above

IC 883 / ARP 193 - detail

Negative CCD Image (Square Root Scale, 100% size, cropped) Image details as above

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 IC 3862 - Spiral Galaxy (ARP 265)

IC 3862 / ARP 265 (Canes Venatici)

CCD Image (50% size, cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 02:05 h UT (#585166-69) 12" LX200R  (at f/10.4) + ST-10XME

IC 3862 / ARP 265 - detail NB Image quality is relatively poor, despite this there seems to be no remaing indication of the 2011 Supernova 2011az, discovered 1494 days beforehand [ see more recent images, 2022 ]

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

IC 3862 / ARP 265 - Earlier Image (2011), with SN 2011az SN 2011az (Type IIp) was discovered 2011/03/18.924 by Maurice Gavin Original designation PSN J12535343+3605193  Magnitude at discovery + 16.2, (Rochester Supernova site | Discovery Image | 2011az Page |  Reference Image ) Image below (2011-03-23.91) was taken 5.0 days after discovery. Est. Mag of SN is +15.3 PSN (now SN)  is marked by the white cross hair

Annotated CCD Image (cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter  2011-03-23 21:55 hUT (#464237-41) 12" LX200R  (at f/9.7) + ST-10XME

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 IC 4182 - Irregular Galaxy

IC 4182 (Canes Venatici) Member of M94 Galaxy Group

CCD Image (50% size) 7 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 00:40 h UT (#585110-16) 12" LX200R  (at f/10.4) + ST-10XME

IC 4182 - detail

Negative CCD Image (50% size) Image details as above

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IC 4271 - Spiral Galaxy (ARP 40)

IC 4271 / ARP 40 (Canes Venatici) IC 4271 (VV 355a),   PGC 3096774 (VV 355b)

Annotated CCD Image (Linear Scale, 100% size, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 01:49 h UT (#585155-60) 12" LX200R  (at f/10.4) + ST-10XME

IC 4271 / ARP 40 - detail

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

IC 4271 / ARP 40 - wider view

CCD Image (50% size) Image details as above

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NGC 4535 - Spiral Galaxy (Herschel II-500)

NGC 4535 / Herschel II-500 (Virgo)

CCD Image (50% size) 5 x 120s exposure (average combine), 3x3 binning, C Filter  2015-04-17 23:29 hUT (#585066-70) 12" LX200R  (at f/10.4) + ST-10XME [ Full Size Image]

NGC 4535 - detail

Negative CCD Image (50% size) Image details as above

NGC 4535 and adjacent galaxies NGC 4535 catalog mag +10.6, NGC 4535A  catalog mag ? PGC 1340665 catalog mag +17.5,  PGC 1342675 catalog mag +18.5

Annotated CCD Image (100% size, cropped) Image details as above [ Full Size Image (un-annotated]

NGC 4535 - affect of dew on front corrector plate (Image taken around 55 minutes before the one above)

Set 1 CCD Image (50% size) 5 x 120s exposure (average combine), 3x3 binning, C Filter  2015-04-17 22:33 hUT (#585043-47) 12" LX200R  (at f/10.4) + ST-10XME

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NGC 4627 - Elliptical Galaxy  (companion to NGC 4631)

NGC 4627 (Canes Venatici)

CCD Image (cropped) 3 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 00:29 h UT (#585105-07) 12" LX200R  (at f/10.4) + ST-10XME

NGC 4627 & NGC 4631 / Caldwell 32 / ARP 281

Annotated CCD Image (50% size) Image details as above

NGC 4627 and larger adjacent galaxy NGC 4631 ("Whale Galaxy")

CCD Image (75% size, cropped) Image details as above [uncropped, 75% size]

NGC 4627 and adjacent NGC 4631 - detail

Negative CCD Image (75% size, cropped) Image details as above

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NGC 4725 - Spiral Galaxy (Herschel I-84)

NGC 4725 / Herschel I-84 (Coma Berenices) NB. Herschel Catalogue in TheSky 6 records this barred spiral galaxy as Herschel III-611, but elsewhere this is recorded as Herschel I-84. Hidden Treasures catalog object 69 [ Herschel 400 Objects ]  [ Hidden Treasures ]

CCD Image (linear scale, 50% size) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-20 23:56 h UT (#585082-88) 12" LX200R  (at f/10.4) + ST-10XME [larger image, 75% size]

&

NGC 4725 - Detailed View

CCD Image (log scale, 50% size) Image details as above

NGC 4725 - False Colour View

False Colour CCD Image (square root scale, 50% size) Inverse Spectrum colour bar Image details as above [larger image, 75% size]

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NGC 4789 - Spiral Galaxy (UGC 8024)

NGC 4789 / UGC 8024 (Coma Berenices) M94 Group Member

CCD Image (cropped) 6 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 00:11 h UT (#585092-98) 12" LX200R  (at f/10.4) + ST-10XME

NGC 4789 / UGC 8024 and neighbouring galaxies - Wider View

Annotated CCD Image (50% size) Image details as above

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NGC 5112 - Spiral Galaxy

NGC 5112 (Canes Venatici)

CCD Image (cropped) 7 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-20 23:42 h UT (#585073-79) 12" LX200R  (at f/10.4) + ST-10XME

NGC 5112 - Wider View Bright star on the left hand side of image is the mag +9.3 star, SAO 63502

CCD Image (50% size) Image details as above

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NGC 5227 - Spiral Galaxy with SN ASASSN-15fz

NGC 5227 with SN ASASSN-15fz (Virgo) SN ASASSN-15fz (= PS15adi)  (Type II) was discovered 2015/03/30.570 by All Sky Automated Survey for SuperNovae (ASAS-SN)  V Mag at discovery was +16.9 (Rochester Supernova site | Discovery Image | Reference Image) Image below (2015-04-20.97) was taken 21.4 days after supernova discovery. The supernova is shown by the white markers

Annotated CCD Image (100% size, cropped) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-20 23:09 h UT (#585054-61) 12" LX200R  (at f/10.4) + ST-10XME

NGC 5227 with SN ASASSN-15fz - detail

Negative CCD Image (100% size, cropped) 3 x 90s exposure (average combine), 3x3 binning, Xo (Blue Blocking) Filter 2015-04-20 23:19 h UT (#585062-64) 12" LX200R  (at f/10.4) + ST-10XME

NGC 5227 with SN ASASSN-15fz - Earlier Image (2015-04-09) Image below (2015-04-09.999) was taken 10.4 days after supernova discovery. The supernova is shown by the white markers

Annotated CCD Image (150% size, cropped) Image details as above

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NGC 5371 - Spiral Galaxy

NGC 5371 (Canes Venatici) (equivalent to NGC 5390 )

CCD Image (Linear Scale, 50% size) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 01:08 h UT (#585128-34) 12" LX200R  (at f/10.4) + ST-10XME

NGC 5371 - detail adjacent bright star is the mag +9.0 star HIP 68032

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

CCD Image (Square Root Scale, 100% size, cropped) Image details as above

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NGC 5421 - Galaxy (ARP 111)

NGC 5421 / ARP 111 (Canes Venatici)

CCD Image (Linear Scale, 50% size) 7 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 01:22 h UT (#585137-43) 12" LX200R  (at f/10.4) + ST-10XME

NGC 5421 / ARP 111 - detail

CCD Image  (Square Root Scale, 100% size, cropped) Image details as above

Negative CCD Image  (Square Root Scale, 100% size, cropped) Image details as above

NGC 5421 - earlier image (2008)

CCD Image  120s sec exposure (single frame), 2x2 binning, C Filter 2008-02-13 06:32 h UT (#263810) 8" LX200 + ST-7e

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NGC 6207 - Spiral Galaxy (Herschell II-701 )

NGC 6207 / Herschell II-701 (Hercules)

CCD Image (Linear Scale, 50% size) 6 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 02:33 h UT (#585182-88) 12" LX200R  (at f/10.4) + ST-10XME

NGC 6207 - detail

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

Negative CCD Image (Linear Scale, 100% size, cropped) Image details as above

NGC 6207 - Earlier Image (2013)

Negative CCD Image  (Linear Scale, 100% size, cropped) 4 x 120 sec exposure (average combine), 3x3 binning, C Filter  2013-10-27 21:40hUT (#551003-06) 12" LX200R  (at f/9.7) + ST-10XME

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UGC 5889 - Galaxy (NGC 3377A)

UGC 5889 (Leo) (galaxy is very faint in this image, image set is affected by trailed stars (poor PEC ?) UGC 5889 is a member of the M96 Galaxy Group

CCD Image (cropped) 3 x 120s exposure (average combine), 3x3 binning, C Filter 2015-04-20 22:20 h UT (#585037-39) 12" LX200R  (at f/10.4) + ST-10XME

UGC 5889 - Wider View Spiral Galaxy to lower left is NGC 3377 Glare in upper right corner is from an offset mag +5.5 star, HIP 52689

CCD Image (50% size) Image details as above [See NGC 3377 - earlier image (2010-02-20)]

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UGC 8331  - Irregular Galaxy (M51 Group)

UGC 8331 (Canes Venatici) UGC 8331 galaxy is faint but just visible in centre of image

CCD Image (Linear Scale, 100% size, cropped) 7 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 02:48 h UT (#585191-97) 12" LX200R  (at f/10.4) + ST-10XME .

UGC 8331 - detail

Negative CCD Image (Linear Scale, 100% size, cropped) Image details as above

UGC 8331 - wider view UGC 8331 galaxy is faint but just visible in centre of image

CCD Image (Linear Scale, 50% size) Image details as above

UGC 8331 - Earlier Image (2015-03-27) UGC 8331 is very clear in this earlier image

CCD Image (50% size) 4 x 120 sec exposure (average combine), 3x3 binning, C Filter 2015-03-27 21:46hUT (#582161-64) 12" LX200R  (at f/10.4) + ST-10XME

UGC 8331 - Earlier Imaging Attempt (2014-11-08) UGC 8331 galaxy (position circled) is not visible or is very faint in this earlier moonlight image.

CCD Image (50% size) 3 x 120 sec exposure (average combine), 3x3 binning, C Filter 2014-11-08 00:33hUT (#569323-25) 12" LX200R  (at f/10.4) + ST-10XME

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UGC 8548 - Spiral Galaxy (ARP 36)

UGC 8548 / PGC 47808 / ARP 36 (Canes Venatici)

CCD Image (Linear Scale, 50% size) 3 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 01:36 h UT (#585149-51) 12" LX200R  (at f/10.4) + ST-10XME

UGC 8548 - detail

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

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

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UGC 8560 - Spiral Galaxy (ARP 183)

UGC 8560 / ARP 183 (Canes Venatici)

Annotated CCD Image (Linear Scale, 100% size, cropped) 4 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-21 02:19 h UT (#585174-78) 12" LX200R  (at f/10.4) + ST-10XME

UGC 8560 / ARP 183 - detail

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

UGC 8560 / ARP 183 - wider view

CCD Image (50% size) Image details as above

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