Astrophotography by Tomi Virtanen, galaxies, NGC7331

Galaxies, NGC7331

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Updates:

19.9.2004 - created this page

Image list:

6.9.2004

Images:

Target: NGC7331, galaxy Date: 6.9.2004

Time: -

Location: Vantaa, Finland

Conditions: -

Telescope: N150 f5 (GSO) Mount: GEM w RA stepper motor (Sky-View)

Camera: SC2 webcam (PCVC840K).
Raw color mode Filters: Baader #2459207 UV/IR-cut

Exposure: 94 x 15s (out of 200), dark frame. Unguided.

Processing: Stacked in K3CCDTools. Adjusted in Photoshop.

Images:
full resolution image displayed

Notes: The north in this image is tilted significantly clockwise, approximately 20 degrees. There are also other galaxies visible, such as NGC7337, NGC7335, NGC7336 and more.
Update 9.9.2004:
I noticed that this image was processed with a wrong debayering mask causing false colours. The corrected version is now shown and the difference is quite minimal since there are not really any colours present. 94 frames were stacked to get this version, the earlier one had a 77 frame stack.

email: tomi.virtanen@yahoo.de

Target:	NGC7331, galaxy	Date:	6.9.2004
		Time:	-
		Location:	Vantaa, Finland
Conditions:	-
Telescope:	N150 f5 (GSO)	Mount:	GEM w RA stepper motor (Sky-View)
Camera:	SC2 webcam (PCVC840K). Raw color mode	Filters:	Baader #2459207 UV/IR-cut
Exposure:	94 x 15s (out of 200), dark frame. Unguided.
Processing:	Stacked in K3CCDTools. Adjusted in Photoshop.
Images:	full resolution image displayed
Notes:	The north in this image is tilted significantly clockwise, approximately 20 degrees. There are also other galaxies visible, such as NGC7337, NGC7335, NGC7336 and more. Update 9.9.2004: I noticed that this image was processed with a wrong debayering mask causing false colours. The corrected version is now shown and the difference is quite minimal since there are not really any colours present. 94 frames were stacked to get this version, the earlier one had a 77 frame stack.