David's Astronomy - Images 2010-05-02 (S00419)

Objects Session Notes

NGC 3423 - Spiral Galaxy & Supernovae 2009ls

NGC 4214 - Barred Irregular Galaxy

Variable Stars

Photometric Monitoring - Variables

- HR Aur, KR Aur, SY Cnc, R CrB, AM CVn, U Gem, RZ LMi, DY Per, GK Per, ER UMa

RS CVn, U Her (failed due to cloud)

Astrometric Monitoring - Nearby Stars

- DX Cnc (Gliese 1111) , CN Leo (Wolf 359)

- Evening session (2.1 hrs), cloud developing

- Session operated under semi-automated control, with remote monitoring from indoors computer.

- Ambient Temperature: 0.5 deg C (minimum)

- CCD operation -25 degC (at 57% average cooling).

- main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis

- opportunity taken to acquire a number of deep sky targets

NGC 3423 - Spiral Galaxy & Supernovae 2009ls

NGC 3423 with SN 2009ls (Sextans)
SN 2009ls (Type II) was discovered 2009/11/23.779 by Koichi Nishiyama and Fujio Kabashima
Magnitude at discovery +xx.x
(Rochester Supernova site | Discovery Image | Reference Image)

Image below (2010-05-02.94) was taken 160 days after SN 2009ls discovery.
SN is much fainter but still visible - Estimated Magnitude +17.4 (C)

Annotated CCD Image (Linear Scale, cropped)
2 x 90s exposure (average combine), 3x3 binning, C Filter
2010-05-02 22:30 hUT (#419076-77)
12" LX200R (at f/9.7) + ST-10XME

SN 2009ls - light curve based on images shown here (C Filter)

NGC 3423 - earlier image (2009-03-25)
Image below (2010-03-25.03) was taken 121 days after SN 2009ls discovery.
SN is much fainter but still visible - Estimated Magnitude +16.6 (C)

Annotated CCD Image (Linear Scale, cropped)
4 x 90s exposure (average combine), 3x3 binning, C Filter
2010-03-25 00:45 hUT (#418152-55)
12" LX200R (at f/9.7) + ST-10XME

NGC 3423 - earlier image (2009-03-09)
Image below (2010-03-09.97) was taken 106 days after SN 2009ls discovery.
SN is much fainter but still visible - Estimated Magnitude +16.9 (C)

Annotated CCD Image (Linear Scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2010-03-09 23:50 hUT (#416348-52)
12" LX200R (at f/9.7) + ST-10XME

NGC 3423 - earlier image (2009-02-20)
Image below (2010-02-20.95) was taken 89 days after SN 2009ls discovery.
SN is marked by white cross-hairs. Estimated Magnitude +15.9 (C)

Annotated CCD Image (Linear Scale, cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2010-02-20 22:50 hUT (#414350-54)
12" LX200R (at f/9.7) + ST-10XME

NGC 3423 - earlier image (2009-12-11.16)
Image below (2009-12-11.16) was taken 17.4 days after SN 2009ls discovery.
SN is marked by white cross-hairs. Estimated Magnitude +14.6 (C)

Annotated CCD Image (Linear Scale, 200% size, Cropped)
5 x 60s exposure (average combine), 3x3 binning, C Filter
2009-12-11 03:52 hUT (#403383-87)
12" LX200R (at f/5.7) + ST-10XME

NGC 3423 - earlier image (2009-11-27.18)
Image below (2009-11-27.18) was taken 3.4 days after SN 2009ls discovery.
SN is marked by white cross-hairs. Estimated Magnitude +14.3 (C)

CCD Image (Linear Scale, 200% size, Cropped)
3 x 60s exposure (average combine), 3x3 binning, C Filter
2009-11-27 04:18 hUT (#400089-112)

NGC 4214 - Barred Irregular Galaxy

NGC 4214 / Herschel I-95 (Canes Venatici)
13 million light years distance
Alias: Hidden Treasures 59
[ Herschel 400 Objects ] [ Hidden Treasures ]

CCD Image (linear scale, cropped)
5 x 120s exposure (average combine), 3x3 binning, C Filter
2010-05-02 23:21 hUT (#419129-33)
12" LX200R (at f/9.7) + ST-10XME

NGC 4214 - detail

CCD Image (square root scaling, cropped)
image details as above

False Colour CCD Image (square root scaling, cropped )
Inverse Spectrum
image details as above

This Web Page:	CCD Images - Session 419 (2010-05-02)
Last Updated :	2023-04-17

David's Astronomy Pages CCD Images - Session 419 (2010-05-02)

NGC 3423 - Spiral Galaxy & Supernovae 2009ls

NGC 4214 - Barred Irregular Galaxy

Variable Stars

David's Astronomy Pages
CCD Images - Session 419 (2010-05-02)