Messier 27 - NGC 6853

"Dumbbell Nebula"

• TYPE:  Planetary Nebula - Type 3 + 2
• RA: 19h 59'
• DEC:  +22degrees 43'
• SIZE:  8.0' X 5.7'
• VISUAL MAGNITUDE:  7.3
• CENTRAL STAR:  13.80
• CONSTELLATION:  Vulpecula
• DISTANCE:  815  Light Years
• DIAMETER:  2.1 Light Years

IMAGING INFORMATION

• TELESCOPE:  RCOS 10 Carbon R/C, Ritchey-Chretien reflector, on Paramount GT1100 mount.
• REDUCER/CORRECTOR:  None - Operating at focal length of 9.0
• CAMERA:  Santa Barbara Instruments, ST-8XME Digital (Thermoelectrically cooled)
• ADAPTIVE OPTICS:  None
• FILTER(S):  Luminence, Red, Green, Blue (Astrodon)
• CCD COOLING TEMPERATURE:  -15 C
• BINNING/RESOLUTION:  1 X 1 (1530 X 1020) L - 2 X 2 (765 X 510 resized to 1530 X 1020) RGB
• EXPOSURE TIME:  L = 10 -  5 minute subframes, RGB 10 - 3 minute subframes (each color) (2 hours, 20 minutes total)
• NUMBER OF IMAGES:  40
• FILM SPEED:  None
• DATE/TIME:  05-24-2006
• LOCATION:  Valley Center, San Diego County, California
• TEMPERATURE:  61 Degrees
• HUMIDITY:  34 Percent

To see the spectra of this object click here

IMAGING INFORMATION

• TELESCOPE:  Celestron C-14 FL 3911 mm, Schmidt-Cassegrain reflector, on Paramont GT1100 mount
• REDUCER/CORRECTOR:  Celestron 6.3
• CAMERA:  Santa Barbara Instruments, ST-8 Digital (Thermoelectrically cooled)
• ADAPTIVE OPTICS:  AO-7
• FILTER(S):  None
• CCD COOLING TEMPERATURE:  -5 C
• BINNING/RESOLUTION:  1 X 1 (1530 X 1020)
• EXPOSURE TIME:  60 minutes
• NUMBER OF IMAGES:  1
• FILM SPEED:  None
• DATE/TIME:  06-13-2004 / 08:22:17 UTC
• LOCATION:  Valley Center, San Diego County, California
• TEMPERATURE:  Unknown
• HUMIDITY:  Unknown

IMAGING INFORMATION

• TELESCOPE:  RCOS 10 Carbon R/C, Ritchey-Chretien reflector, on Paramount GT1100 mount.
• REDUCER/CORRECTOR:  Astro-physics 6.5
• CAMERA:  Santa Barbara Instruments, ST-8 Digital (Thermoelectrically cooled)
• ADAPTIVE OPTICS:  None
• FILTER(S):  Astrodon H-a
• CCD COOLING TEMPERATURE:  -15 C
• BINNING/RESOLUTION:  1 X 1 (1530 X 1020) LRGB
• EXPOSURE TIME:  135 minutes (1 1/4 hours) total, 5-15 min H-a
• NUMBER OF IMAGES:  5
• FILM SPEED:  None
• DATE/TIME:  08-3-2005 & 08-4-2005
• LOCATION:  Valley Center, San Diego County, California
• TEMPERATURE:  61 Degrees
• HUMIDITY:  34 Percent

IMAGING INFORMATION

• TELESCOPE:  Celestron C-11, FL 2800 mm, Schmidt-Cassegrain reflector
• REDUCER/CORRECTOR:  Celestron 6.3
• CAMERA:  Santa Barbara Instruments, ST-8 Digital (Thermoelectrically cooled)
• ADAPTIVE OPTICS:  None
• FILTER(S):  Red, Green, Blue
• CCD COOLING TEMPERATURE:  -15 C
• BINNING/RESOLUTION:  2 X 2 (765 X 510)
• EXPOSURE TIME:  12 minutes Red, 22 minutes Green, 45 minutes Blue,
• NUMBER OF IMAGES:  3 combined to create a tri color image
• FILM SPEED:  None
• DATE/TIME:  08-15-1999 / 06:57:34 UTC
• LOCATION:  Observatory Campground, Palomar Mountain,San Diego County, California
• TEMPERATURE:  Unknown
• HUMIDITY:  Unknown

This was the first color RGB image I attempted, no polar alignment of the telescope mount, poor telescope drive gears!!!  I've come a long way since then. K

All the images in this site are © Copyright 1999-2012 by Kevin Hearst.
Commercial use of these images without the prior written consent or knowledge of the author is strictly prohibited.