NGC 1491 - The Fossil Footprint
Above image awarded AAPOD2 on 20Jan23
Below: I reprocessed the data in a slightly different way and cropped to show only the "Fossil Footprint" region - for a closer look.
Located on the edge of a vast cloud of natural gas, about 10,700 light-years away in the constellation Perseus, NGC 1491 (also called the Fossil Footprint) is an H II region (a large, low-density cloud of partially ionized gas in which star formation has recently taken place). Its central star (BD +50 886), is a young blue star with an 11.22 magnitude whose stellar winds are blowing a bubble in the surrounding gas.
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: ASI 2600MM
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor & PixInsight,
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm),
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 5100 x 3400
This Image (Max) : 3600 x 2400
Dates: 5th - 18th Jan 2023
Frames:
Astrodon Ha 42 x 10'
Astrodon OIII 36 x 10'
Astrodon SII 30 x 10'
Total integration = 18 Hours.
Center (RA, Dec): (61.694, 51.247)
Center (RA, hms): 04h 06m 46.660s
Center (Dec, dms): +51° 14' 47.423"
Size: 1.69 x 1.13 deg
Radius: 1.018 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 200.0 degrees E of N
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: ASI 2600MM
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: None
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor & PixInsight,
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm),
Accessories: ATIK EFW3, SeleTEK2 controlling Robofocus Focuser.
Original Image : 5100 x 3400
This Image (Max) : 3600 x 2400
Dates: 5th - 18th Jan 2023
Frames:
Astrodon Ha 42 x 10'
Astrodon OIII 36 x 10'
Astrodon SII 30 x 10'
Total integration = 18 Hours.
Center (RA, Dec): (61.694, 51.247)
Center (RA, hms): 04h 06m 46.660s
Center (Dec, dms): +51° 14' 47.423"
Size: 1.69 x 1.13 deg
Radius: 1.018 deg
Pixel scale: 1.2 arcsec/pixel
Orientation: Up is 200.0 degrees E of N
SII, Ha & OIII in the image:
Sky map & Locator chart
Annotated Image
