David's Astronomy - Images 2008-02-12 (S00263)

Objects Session Notes

NGC 2770 - Spiral Galaxy & Supernovae 2007uy and 2008D

NGC 1555 (Hind's Variable Nebula)

NGC 4490 - Spiral Galaxy ('Cocoon Galaxy')

NGC 5829 - Spiral Galaxy with Supernova 2008B

NGC 5394/5395, ARP 84 ("Heron")

NGC 5421 - Galaxy (ARP 111)

Astrometric & Photometric Monitoring
- SS Cyg, U Gem, RZ LMi (dwarf nova)
- U And, W And, SS Her, U Her (mira variables)
- BL Lac (Blazar)
- RX And, Z And, TT Ari, KR Aur, AQ CMi, SY Cnc, AM CVn, Y CVn, DY Per, SZ Her, AD Leo, CY Lur, TZ Lyr, FU Ori, U Mon, DY Per, RR Tau, ER UMa, SU UMa (variables)
- 61 Cyg, Ross 248, Gliese 1245, Teegardens Star (Nearby Stars)

- All night session (12.3hr). Operated under automated control for bulk of session, with occasional remote control monitoring (middle section)

- CCD operation of -20 degC (at 52% average cooling).

- main objective was to acquire images of certain selected stars for ongoing photometric, and astrometric measurements in particular Z And and RX And, plus a number of gallery images.

Quasar PC 1247+340 - Attempted Observation

Star-field around Quasar PC 1247+340 (Canes Venatici)
Quasar PC 1247+340 (redshift 4.897) discovered in 1991
was for a while the most distant object known.
At magnitude +20.4 the quasar is too dim to have been captured in
this 15 x 3 min exposure (extreme mag limit ~x.xx).

CCD Image
15 x 180s exposure (average combine), 2x2 binning, C filter,
2008-02-13 xxxxh UT (#263685-99)

Star-field around Quasar PC 1247+340 - detail

Negative CCD Image (200% size)
15 x 180s exposure (sum combine), 2x2 binning, C filter,
Cropped
2008-02-13 xxxxh UT (#263685-99)

Star-field around Quasar PC 1247+340 - Earlier Attempt

Magnitudes estimates of adjacent stars are shown,
based on a Plate Solution on 10 UCAC2 stars.
Catalog position of the Quasar is shown by the black circle.

Annotated Negative CCD Image (200% size)
5 x 180s exposure (sum combine), 2x2 binning, C filter,
Cropped
2007-03-22 21:53h UT (#185109-13)

NGC 2770 - Spiral Galaxy & Supernovae 2007uy and 2008D

NGC 2770 (Lynx) with SN 2007uy & SN 2008D

CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter
2008-02-12 21:45 hUT (#263192-98)

NGC 2770 with SN 2007uy & SN 2008D - detail
Image below (2008-02-12.91) was taken
43 days after 2007uy discovery &
32.5 days after 2008D discovery
2007uy : mag ?? (C)
2008D : mag too faint to measure

Annotated CCD Image (250% size)
Image details as above

NGC 2770 with SN 2007uy & SN 2008D -
earlier image from 2008-01-17
Image below (2008-01-17.98) was taken
17.3 days after 2007uy discovery &
6.6 days after 2008D discovery
2007uy : mag +14.8 (C)
2008D : mag too faint to measure

Annotated CCD Image (250% size)
Image details as above

2007uy (Type 1b) was discovered 2007/12/31.669 by Yoji Hirose
Magnitude at discovery was +17.2 (C filter).
(Rochester Supernova site | Discovery Image | Reference Image)

2008D (Type 1c) was discovered 2008/01/11.42
by Lick Observatory Supernova Search
Magnitude at discovery was +17.5 (C filter).
(Rochester Supernova site | Discovery Image | Reference Image)

NGC 1555 - Nebula ("Hind's Variable Nebula")

NGC 1555 - "Hind's Variable Nebula" (Taurus)
The Nebula is also known as
"Struve's Lost Nebula" and "Burnham's Nebula"
The adjacent bright star is variable star T Tau

CCD Image
5 x 180s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling
2008-02-12 22:54 hUT (#263234-38)

Hind's Variable Nebula - detail

CCD Image (200% size)
Image details as above

Hind's Variable Nebula - detail from 2007-11-28

CCD Image (200% size)
5 x 180s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling
2007-11-28 21:53 hUT (#237109-13)

Hind's Variable Nebula - detail from 2007-10-05

CCD Image (200% size)
5 x 180s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling
2007-10-05 04:38 hUT (#219053-57)

Hind's Variable Nebula - detail from 2007-09-11

CCD Image (200% size)
6 x 180s exposure (average combine),
2x2 binning, C Filter, Linear brightness scaling, Cropped)
2007-09-11 01:05 hUT (#211121-26)

NGC 4490 - Spiral Galaxy ('Cocoon Galaxy')

NGC 4490 & NGC 4485 (Canes Venatici)

Annotated CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter
2008-02-13 04:00 hUT (#263704-10)

Note : 19.2 days after this image was taken a Type II
supernova (SN 2008ax) was discovered in NGC 4490
by LOSS; Koichi Itagaki on 2008/03/03.45

NGC 4490 - later image with SN2008ax (2008-03-08)
Image below taken 4.6 days after SN2008ax discovery.

Annotated CCD Image
7 x 120s exposure (average combine), 2x2 binning, C Filter
2008-03-08 00:48 hUT (#273136-42)

NGC 5829 - Spiral Galaxy with Supernova 2008 B

NGC 5829 with Supernova 2008B (Bootes)
2008B is a Type IIn Supernova discovered in NGC 5829
on 2008/01/02.84 by Koichi Itagaki
at ? mag +16.6
(Rochester Supernova site | Discovery Image | )

CCD Image
5 x 120s exposure (average combine),
2x2 binning, C Filter,
2008-02-13 04:17 hUT (#263715-19)

NGC 5829 with Supernova 2008B - detail
NGC 5829 / SN 2008b - image on 2008-01-12 2008-01-12.20, 9.4 days after discovery. 2008B measured magnitude +16.0 (C)		NGC 5829 - one month later (2008-02-13) 2008-02-13.11, 40.3 days after discovery. 2008B now significantly faded

Annotated CCD Image (250% size, cropped) 5 x 120s exposure (average combine), 2x2 binning, C Filter, 2008-01-12 04:45h UT (#252525-29)		CCD Image (250% size, cropped) 4 x 120s exposure (average combine), 2x2 binning, C Filter, 2008-02-13 04:17h UT (#262288-91)

NGC 5394/5395, ARP 84 - Spiral galaxy with HSB companion on arm ("Heron")

NGC 5394 and NGC 5395 / ARP 84 (Canes Venatici)

CCD Image
5 x 120s exposure (average combine), 2x2 binning, C Filter
2008-03-13 06:19h UT (#263800-04)
[Annotated Image of NGC 5394/5395 from 2008-03-10 ]

NGC 5394, NGC 5395 / ARP 84 - detail

CCD Image (200% enlarged, cropped)
(Image details as above)

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

This Web Page:	CCD Images - Session 263 (2008-02-12)
Last Updated :	2019-12-10

David's Astronomy Pages CCD Images - Session 263 (2008-02-12)