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NGC 281 (Pacman nebula) in RGB

By | 2018-11-06T15:50:53+00:00 11 October 2018|Categories: Nebula, News, NGC Autumn|

Few things wrong. Poor seeing, bloated stars, gusty wind,…

Object ID NGC 281 Pacman nebula (IC11)
Mag. 10, Size 35′
H II region emission nebula
Contains open cluster NGC 1590
Cassiopeia
Details 2018-10-10
Poor seeing and transparency
Telescope 200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Atik 460EX, Baader RGB  filters
Exposure(s) 15 x 120s each colour
darks, flats
Capture APT
Processing Nebulosity 4, Photoshop
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NGC 281 (Pacman nebula) in Ha

By | 2018-10-11T15:16:22+00:00 8 October 2018|Categories: Nebula, News, NGC Autumn|

Best night for ages.

Object ID NGC 281 Pacman nebula (IC11)
Mag. 10, Size 35′
H II region emission nebula
Contains open cluster NGC 1590
Cassiopeia
Details 2018-10-06 22:03-23:41 UT
No moonlight and good transparency
Telescope 200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Atik 460EX, Baader 7nm Ha filter
Exposure(s) 19 x 300s
darks, flats
Capture APT
Processing Nebulosity 4, Photoshop

NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way’s Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184,[3] spanning over a larger area of 40 arcmin.[4] A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us.[5] Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

E. E. Barnard discovered this nebula in August 1883, who described it as “a large faint nebula, very diffuse.” Multiple star ‘B 1’ or β 1 was later discovered by S. W. Burnham, whose bright component is identified as the highly luminous O6 spectral class star, HD 5005 or HIP 4121. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 arcsec. There has been no appreciable change in this quintuple system since the first measures were made in 1875.
Wikipedia

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Bubble nebula project 2 (NGC 7635)

By | 2018-10-09T13:00:28+00:00 24 September 2018|Categories: Caldwell, Nebula, News, NGC Autumn|

Added 18 frames of Ha. Much more detail and less noise.

Object ID NGC 7635 Bubble nebula (C11)
Mag. 10, Size 15’x8′
H II region emission nebula
Cassiopeia
Details 2018-09-23 21:15-23:07 UT
Bright moonlight
Telescope 200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Atik 460EX, Baader 7nm Ha filter
Exposure(s) 18 x 300s
darks, flats
Capture APT
Processing Nebulosity 4, Photoshop

I did take some RGB colour but as you can see below there is a huge dust mark in it. Normally not a problem as flats will remove it. But when I went to create flats, the dust had disappeared so very difficult to remove. Unless it’s not dust but an out of focus reflection of the bright star? If it is I’ve never seen anything like it in my images before.

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Bubble nebula project (NGC 7635)

By | 2018-09-23T16:38:33+00:00 23 September 2018|Categories: Caldwell, Nebula, News, NGC Autumn|

One of my favourite objects. Trying to do this over a series of nights. Ha first of all then add colour channels. Only 2x300s exposures in Ha so far.

Object ID NGC 7635 Bubble nebula (C11)
Mag. 10, Size 15’x8′
H II region emission nebula
Cassiopeia
Details 2018-09-22 21:40-21:45 UT
Bright moonlight
Telescope 200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Atik 460EX, Baader 7nm Ha filter
Exposure(s) 2 x 300s
darks, flats
Capture APT
Processing Nebulosity 4, Photoshop
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Orion and Running Man nebulae

By | 2018-02-14T15:46:06+00:00 14 February 2018|Categories: M31-60, Nebula, News, NGC Winter|

Red channel has poor focus.

Object ID M42,43 and Sh2-279
Details Nebulae, Orion
Mag. 4 Size 65’x60′
Telescope C80ED @ f5.6 (x0.75 reducer)
Camera Atik 460EX (-15C) and SX filter wheel
IDAS P2 LPR filter
Exposure(s) L 10x60s 1×1, RGB 10x60s each 2×2
darks, no flats or bias
Capture APT, finder guiding with PHD2
Processing Stacked in Nebulosity, processed in Photoshop and Lightroom
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Rosette Nebula C49 and NGC 2244

By | 2018-02-14T15:45:16+00:00 14 February 2018|Categories: Caldwell, Nebula, News, NGC Winter|

Had to discard the L channel as underexposed.

Object ID C49 Rosette Nebula and NGC 2244
Details Nebula and Open Cluster, Monoceros
Mag. 9 Size 1.3 degrees
Telescope C80ED @ f5.6 (x0.75 reducer)
Camera Atik 460EX (-15C) and SX filter wheel
IDAS P2 LPR filter
Exposure(s) RGB 10x60s each 2×2
darks, no flats or bias
Capture APT, finder guiding with PHD2
Processing Stacked in Nebulosity, processed in Photoshop and Lightroom
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Horsehead, Flame and Alnitak

By | 2018-02-12T11:58:58+00:00 12 February 2018|Categories: Nebula, News, NGC Winter|

First for a while. Far too few subs and poor focusing. Big reflection of Alnitak too.

Processed (very harshly to get anything out of it) in Nebulosity 3, Photoshop and Lightroom. Noise reduction very heavily used!

Object ID NGC 2024 Flame nebula, Barnard 22 Horsehead nebula
Details Nebula and Dark Nebula, Orion
Mag. 2 Size 30′, 8’x6′
Telescope C80ED @ f5.6 (x0.75 reducer)
Camera Atik 460EX (-15C) and SX filter wheel
IDAS P2 LPR filter
Exposure(s) L 2x60s 1×1, RGB 2x60s each 2×2
darks, no flats or bias
Capture APT unguided
Processing Stacked in Nebulosity, processed in Photoshop and Lightroom
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Cone Nebula and Christmas Tree Cluster

By | 2017-02-01T09:35:27+00:00 30 January 2017|Categories: Nebula, News, NGC Winter, Open Cluster|

NGC 2264
Star forming nebula and Open cluster, Monoceros
Mag 3.9, size 20′
2017-01-29
200mm f8 RC at f6 (Revelation x0.75 reducer)
Piggyback guiding with 70mm f/7 refractor
L 5×240s 2×2, RGB 5×120s 4×4 Darks Bias Flats
Atik 460EX (-25C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

Bad planning in that the object went behind the observatory roof after only 5 sets of exposures. Not great but better than expected though.

Good quality flats make such a huge difference. Much easier to process, especially when using the reducer.

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M42 for 2017

By | 2017-01-02T12:55:02+00:00 2 January 2017|Categories: M31-60, Nebula, News|

Got to do it every year – this is the 2017 version. Also trying out my new Revelation x0.75 reducer for the RC8. Seems to work very well for a very reasonable price £69. Spacing should be 80mm +/- 5mm. I managed to get 75mm with my filter wheel and 460EX.

Orion Nebula, Diffuse Emission Nebula, Orion
Mag 4.0 Size 85’x60′
2017-01-01
200mm f8 RC at f6 (new Revelation x0.75 reducer)
Piggyback guiding with new 70mm f/7 achromatic refractor
L 15×60s 2×2, RGB 15×30s 4×4 BPM
Atik 460EX (-25C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

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NGC1977 Running Man Nebula

By | 2017-01-31T10:52:42+00:00 26 November 2016|Categories: Nebula, News, NGC Winter|

Another attempt at this with the CCD this time. Images get progressively worse through the night as equipment mists up despite attempts to stop it. Flats were useless and made it all worse so a little vignetting.

2016-11-25
200mm f5 Newtonian, piggyback guiding C80ED
L 9×180 1×1, RGB 9×120 2×2
BPM
Atik 460EX (-25C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

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