The above image was completed in February 2024 - with an extra 17 hours of data.....10 Hours Ha + 7 hours OIII added to the original.
(I won't bother making a separate page for this 2nd version.....no real need.).
(I won't bother making a separate page for this 2nd version.....no real need.).
EGB6
EGB 6 is a very faint planetary nebula in Leo. It was catalogued by Glenn Ellis, Earl Grayson and Howard Bond in 1984 after looking through prints from the Palomar Sky Survey. It is big (8 light years wide) and relatively close (2100 light years), so it is old (probably 50,000 years) and very very dim.
This was a difficult one! On 15 minute sub exposures, I cannot say that I see anything other than the slightest hint that this faint old planetary nebula is even in the frame. Even at 33 hours of exposure time, it is not exactly jumping out at you!
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: TAK 0.73X
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor & PixInsight,
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm), Astrodon R, G & B.
Accessories: Robofocus Focuser controlled by Seletek Armadillo, ATIK EFW3
Original Resolution: 2100 x 1400
This Image (Max) : 2100 x 1400
Dates: 15th Apr - 25th APR 2023
Frames:
Astrodon Ha 60 x 15'
Astrodon OIII 60 x 15'
Astrodon RGB 3 x 30 x 2'
Total integration = 33 Hours
Center (RA, Dec): (148.239, 13.748)
Center (RA, hms): 09h 52m 57.339s
Center (Dec, dms): +13° 44' 53.804"
Size: 53.8 x 35.9 arcmin
Radius: 0.539 deg
Pixel scale: 1.34 arcsec/pixel
Orientation: Up is 0.1 degrees E of N
This was a difficult one! On 15 minute sub exposures, I cannot say that I see anything other than the slightest hint that this faint old planetary nebula is even in the frame. Even at 33 hours of exposure time, it is not exactly jumping out at you!
Imaging telescopes or lenses: Takahashi FSQ130ED
Imaging cameras: QSI 6120i
Mounts: Takahashi EM 400 Temma 2M
Guiding telescopes or lenses: Takahashi FS60CB
Guiding cameras: QHY CCD QHY 5 II
Focal Extender / Reducer: TAK 0.73X
Software: Sequence Generator Pro SGP (for capture) PHD 2 (guiding), Astro Pixel Processor & PixInsight,
Filters: Astrodon Ha (3nm), Astrodon OIII (3nm), Astrodon SII (3nm), Astrodon R, G & B.
Accessories: Robofocus Focuser controlled by Seletek Armadillo, ATIK EFW3
Original Resolution: 2100 x 1400
This Image (Max) : 2100 x 1400
Dates: 15th Apr - 25th APR 2023
Frames:
Astrodon Ha 60 x 15'
Astrodon OIII 60 x 15'
Astrodon RGB 3 x 30 x 2'
Total integration = 33 Hours
Center (RA, Dec): (148.239, 13.748)
Center (RA, hms): 09h 52m 57.339s
Center (Dec, dms): +13° 44' 53.804"
Size: 53.8 x 35.9 arcmin
Radius: 0.539 deg
Pixel scale: 1.34 arcsec/pixel
Orientation: Up is 0.1 degrees E of N
Sky Map & Finder Chart
Ha & OIII in the image:
Annotated Image (Click to Enlarge)
