Derby and District Astronomical Society

Messier 1 (NGC 1952)
The Crab Nebula

Supernova Remnant in Taurus      RA 05h 34m 30s  Dec +22d 01m 00s

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Mike Lancaster captured this image of The Crab Nebula on the 9th January 2014 using a Mallincam Xtreme X2 camera, a 10" Meade LX200 ACF SCT, NEQ6 Pro mount, and a Mallincam MFR5 focal reducer at f/5. It is a stack of three 60 second hyper mode exposures with the amplifier gain (AGC) set at 5. No guiding was employed. The images were stacked and processed in Nebulosity v3 using the levels/power stretch function and a little bit of noise reduction. The image was further procesed in Photoshop Elements using Noel Carboniís Astronomy Tools to reduce some of the amp glow in the top left corner, reduce overall noise and darken the space background.

This image of the Crab Nebula was captured by Adrian Brown in December 2006. It was created from 5 x 30 minute exposures with a 6 nm H-alpha filter. For imaging Adrian used an ATIK ATK16HR camera through a Skywatcher 80ED Pro refractor at f7.5. This was guided using an ATIK ATK-2HS camera through a Skywatcher 80T refractor. The set up was mounted on a Celestron CGE mount.

Chris Newsome and Adrian Brown produced the following image of The Crab Nebula on the 19th February 2006. They used a Canon EOS300 camera at 800 ASA through Adrian's Celestron C11 fitted with a f/6.3 focal reducer. This was set up on a CGE mount and guided using Guidedog software with focusing using DSLRFocus. An Astronomik CLS filter was also used to remove sodium light. Three images taken at 210 seconds exposure and calibrated in Maxim DL. The resulting image was processed in CS2 using RGB levels, curves, GradientXTerminator and a highpass filter.

This image of The Crab Nebula was captured by Adrian Brown using the Rent a Scope Robotic Observatory in New Mexico on the 30th October 2005. He used a Takahashi Mewlon 300 on a Paramount mount and an SBIG ST8E camera to capture 13x 120 seconds high resolution luminance frames. Lower resolution RGB frames captured were 5x 60 seconds Red, 4x 60 seconds Green and 5x 90 seconds Blue. To process the image Adrian used Maxim DL 4 to align and stack the composite frames and then Adobe Photoshop to combine the luminance and RGB images into the final image. Adrian comments that "the seeing conditions in New Mexico weren't as good as the day before when I imaged Caldwell 23 (NGC 891) so this image is a little on the soft side and not as sharp. Having said that, compared to the UK it was still good observing conditions. It was fascinating to look at the webcam quality "all sky cam" image for the observatory and see the milky way arcing across the image. I can only imagine what it must be like to actually be there."

Adrian has also taken a picture of Caldwell 23 (NGC 891) with this robotic telescope facility, where he provides a review.