homcavobservatory
NGC6712_IC1295_20190726_HomCavObservatory_ReSizedDown2HD
Object Details:
Globular cluster NGC 6712 lies about 22,500 light-years from Earth, contains approximately 94,000 stars and is estimated to be about 10 billion years old. Shining at magnitude 8.6 and having an apparent diameter of just over 7 arc-minutes, it (and IC 1295) can be found in the constellation of Scutum.
Planetary nebula IC 1295 is (by comparison a 'mere') 3,300 light-years distant. Glowing at magnitude 12 it spans just 1.7 x 1.4 arc-minutes in our sky.
Image Details: The attached was taken by Jay Edwards at the HomCav Observatory on the evening of July 26, 2019 using an 8-inch, f/7 Criterion newtonian reflector and a Canon 700D DSLR tracked on a Losmandy G-11 mount running a Gemini 2 control system. This in turn was guided using PHD2 to control a ZWO ASI290MC planetary camera / auto-guider in an 80mm f/6 Celestron 'short-tube' refractor.
This is my first attempt at imaging these object, and as such is a test consisting of a (relatively speaking) very short stack totaling only 45 minutes of exposure (not including darks, flats & bias frames).
Although I was fairly pleased with the result, given the large difference in brightness between the core of the globular cluster and the outer regions of the planetary nebula, I look forward to trying an HDR-like approach on these objects in the future in an attempt to bring out additional details in the nebula's outer regions while simultaneously preventing the globular's core from overexposing.
Stacked in DeepSkyStacker and processed using PixInsight and PaintShopPro, as presented here in nearly 'full frame' (having only been cropped slightly to remove the minor shifts between frames), re-sized down to HD resolution and the bit depth has been lowered to 8 bits per channel.
NGC6712_IC1295_20190726_HomCavObservatory_ReSizedDown2HD
Object Details:
Globular cluster NGC 6712 lies about 22,500 light-years from Earth, contains approximately 94,000 stars and is estimated to be about 10 billion years old. Shining at magnitude 8.6 and having an apparent diameter of just over 7 arc-minutes, it (and IC 1295) can be found in the constellation of Scutum.
Planetary nebula IC 1295 is (by comparison a 'mere') 3,300 light-years distant. Glowing at magnitude 12 it spans just 1.7 x 1.4 arc-minutes in our sky.
Image Details: The attached was taken by Jay Edwards at the HomCav Observatory on the evening of July 26, 2019 using an 8-inch, f/7 Criterion newtonian reflector and a Canon 700D DSLR tracked on a Losmandy G-11 mount running a Gemini 2 control system. This in turn was guided using PHD2 to control a ZWO ASI290MC planetary camera / auto-guider in an 80mm f/6 Celestron 'short-tube' refractor.
This is my first attempt at imaging these object, and as such is a test consisting of a (relatively speaking) very short stack totaling only 45 minutes of exposure (not including darks, flats & bias frames).
Although I was fairly pleased with the result, given the large difference in brightness between the core of the globular cluster and the outer regions of the planetary nebula, I look forward to trying an HDR-like approach on these objects in the future in an attempt to bring out additional details in the nebula's outer regions while simultaneously preventing the globular's core from overexposing.
Stacked in DeepSkyStacker and processed using PixInsight and PaintShopPro, as presented here in nearly 'full frame' (having only been cropped slightly to remove the minor shifts between frames), re-sized down to HD resolution and the bit depth has been lowered to 8 bits per channel.