Astrophotography by Tomi Virtanen, nebulas, M1

Nebulas, M1

nebulas index
main index

Updates:

11.2.2005 - reprocessed image of 8.2.2005
9.2.2005 - added image of 8.2.2005
22.11.2004 - created this page

Image list:

8.2.2005
22.11.2004

Images:

8.2.2005

Target: M1, supernova remnant.
Also known as the Crab nebula. Date: 8.2.2005

Time: 22:40 .. 23:30

Location: Vantaa, Finland

Conditions: Naked eye limit magnitude ~3.5.

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

Camera: Art-429 (beta). TEC off.
Hi-res interlaced mode. (1x1) Filters: none

Exposure: 18.3 min (55 x 20s), dark frame (3 x 20s). Unguided.

Processing: -

Images:
cropped full resolution image displayed
non-square pixels: 8.6 x 8.4

Notes: This is my first astro-image using the Artemis CCD camera. The processing was done very quickly to get this first image off the camera. Some not so good frames were also selected as the little deformed star shapes indicate. Also the pixel aspect ratio is still uncorrected (8.6µm x 8.3µm).
Update 11.2.2005:
Processed the image further, using a high-pass kernel filter to increase visible detail in the nebula. The new version is shown. Old version is stored here for reference.

22.11.2004

Target: M1, supernova remnant.
Also known as the Crab nebula. Date: 22.11.2004

Time: 01:28 .. 02:15

Location: Vantaa, Finland

Conditions: Naked eye limit magnitude ~3.5.

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: 50 x 15s, dark frame. Unguided.

Processing: Stacked in K3CCDTools. Adjusted in Photoshop. Reduced final size to 75%.

Images:
full resolution image displayed

Notes:

email: tomi.virtanen@yahoo.de

Target:	M1, supernova remnant. Also known as the Crab nebula.	Date:	8.2.2005
		Time:	22:40 .. 23:30
		Location:	Vantaa, Finland
Conditions:	Naked eye limit magnitude ~3.5.
Telescope:	N150 f5 (GSO)	Mount:	GEM w RA stepper motor (Sky-View)
Camera:	Art-429 (beta). TEC off. Hi-res interlaced mode. (1x1)	Filters:	none
Exposure:	18.3 min (55 x 20s), dark frame (3 x 20s). Unguided.
Processing:	-
Images:	cropped full resolution image displayed non-square pixels: 8.6 x 8.4
Notes:	This is my first astro-image using the Artemis CCD camera. The processing was done very quickly to get this first image off the camera. Some not so good frames were also selected as the little deformed star shapes indicate. Also the pixel aspect ratio is still uncorrected (8.6µm x 8.3µm). Update 11.2.2005: Processed the image further, using a high-pass kernel filter to increase visible detail in the nebula. The new version is shown. Old version is stored here for reference.