NGC Autumn

/NGC Autumn

NGC 281 (Pacman nebula) in RGB

By | 2018-10-11T17:52:25+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

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

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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NGC 752

By | 2018-09-22T12:27:08+00:00 22 September 2018|Categories: News, NGC Autumn, Open Cluster|

Heavy processing to remove moonlight background. First entry in the SAA 100 catalog.

Object ID NGC 752
Open Cluster, Andromeda
Mag. 5.7, size 50′
Details 2018-09-21
Bright 90% Moon
Telescope 200mm f5 Newtonian, MPCC
IDAS P2 LPR filter
Guided
Camera Canon 600D
Exposure(s) 10x40s, ISO 800, darks, flats
Capture APT
Processing Nebulosity, Photoshop
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NGC 281 (Pacman nebula)

By | 2015-10-05T10:20:09+00:00 4 October 2015|Categories: Nebula, News, NGC Autumn|

Nebula, Star Cluster, Open Cluster, HII Region, Cassiopeia
Mag. 7, Size 48′
2015-10-02
200mm f8 RC, piggyback guiding C80ED
L 10×300 2×2, RGB 10×240 3×3
BPM, flats
Atik 460EX (-10C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

Very bad focus and some field rotation.

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NGC 7635 Bubble Nebula (C11) with 460EX

By | 2017-01-31T10:52:42+00:00 12 October 2014|Categories: Caldwell, Nebula, News, NGC Autumn|

First real LRGB image with the new 460EX. Still need to improve processing. I have some Ha from previous night to add in too but not sure how to do it.

Emission nebula, Cassiopeia
Mag. 10 Size 15’x8′
2014-10-12
200mm f5 newtonian, piggyback guiding C80ED
L: 5×180 (1×1) RGB 5×120 (2×2) each
Atik 460EX (-15C), LRGB filters, MPCC, Lumicon DS filter
Captured in APT, Processed in Nebulosity, PS CC

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NGC 663 (C12)

By | 2015-10-10T12:27:02+00:00 2 October 2014|Categories: Caldwell, News, NGC Autumn, Open Cluster|

Open Cluster, Cassiopeia
Mag 7.1 Size 916′
2014-10-01
200mm f8 RC, piggyback guiding C80ED
L 8×120 2×2, RGB 5×120 3×3
Atik 460EX (-10C), LRGB filters, Lumicon DS filter
Captured in APT, Processed in Nebulosity, PS CC

First chance to try out the new 460EX properly.

A “mucky” night with low transparency. Lots of star bloat but the camera has almost no noise at -10C. Processing still needs some work. Too many very red stars. Could be caused by the DS filter?

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NGC 7243 (C16)

By | 2017-01-31T10:52:43+00:00 10 October 2013|Categories: Caldwell, Deep Sky, News, NGC Autumn, Open Cluster|

Open Cluster, Lacerta
Mag 6.4 Size 21′
2013-010-10
200mm f5 Newtonian MPCC, piggyback guiding C80ED
15×60 10×180 10×90 ISO 1600, darks
Canon EOS 350D modded, Astronomik CLS
Captured in APT, Processed in Nebulosity, PS CS5

Not transparent enough tonight to image any galaxies (tried M33 but the image fogged after 2 minutes) or nebulae so a new open cluster for me.

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NGC 7789 White Rose Cluster

By | 2017-01-31T10:52:44+00:00 5 October 2012|Categories: Finest NGC, News, NGC Autumn, Open Cluster|

Open Cluster, Cassiopeia
Mag 6.7 Size 16′
2012-10-5
200mm f8 RC, OAG
14x120s ISO 800, darks, flats
Canon EOS 350D modded, Astronomik CLS
Captured in APT, Processed in Nebulosity, PS CS5
I came across this one by accident. A lovely open cluster. 

NGC 7789 is an open cluster in Cassiopeia that was discovered by Caroline Herschel in 1783. Her brother William Herschel included it in his catalog as H VI.30. This cluster is also known as “The White Rose” Cluster or “Caroline’s Rose” Cluster because when seen visually, the loops of stars and dark lanes look like the swirling pattern of rose petals as seen from above. Wikipedia

 

 

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