Caldwell

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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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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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Double Cluster in Perseus NGC 869 and 884

By | 2018-09-09T20:14:14+00:00 10 December 2017|Categories: Caldwell, Deep Sky, News, NGC Winter, Open Cluster|

First image using the C80ED for a long time.

Object ID Caldwell 14, NGC 869 and 884
Details Open Clusters, Perseus
Date/Time 2017-12-10 19:41 – 20:01 UT
Telescope C80ED @ f7.5
IDAS P2 LPR filter
Camera Canon 600D
Exposure(s) 30x30s lights, 10x30s darks
ISO 1600
Capture APT, unguided
Processing Stacked in Nebulosity, processed in Photoshop and Lightroom

 

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IC 5146 Cocoon Nebula (C19) #2

By | 2015-10-05T12:50:33+00:00 11 September 2015|Categories: Caldwell, Nebula, News, NGC Summer|

Reflection/emission nebula, Cygnus
Caldwell 19, Finest NGC 99b, SAC110 45
Mag. 10, Size 12’x12′
2015-09-10 / 2015-10-01
200mm f8 RC, piggyback guiding C80ED
L 10×300 2×2, RGB 8×240 3×3
BPM no flats
Atik 460EX (-10C), LRGB filters, IDAS P2 LPR filter
Captured in APT, Processed in Nebulosity3, PS CC, LightRoom

Second attempt at this with the 460EX. 2 nights of data. Meridian flip reduced time.
This is the first time I’ve tried final processing and touch up in Adobe LightRoom.

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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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Cocoon from multiple dates and telescopes

By | 2017-01-31T10:52:42+00:00 6 September 2014|Categories: Caldwell, Nebula, News, NGC Summer|

First successful attempt at using different focal ratios. Not bad!
Using subs from 200mm f/5 newtonian and 2 different sessions with the RC8.

200mm f/5 newtonian 10x180s 4x240s, darks, flats,  ISO 800 2008-08-19
200mm f/8 RC 2×240, darks, flats ISO 1600 2012-09-16
200mm f/8 RC 10×180, 20×240, darks, ISO 1600 2014-08-26

And this is what the stack looked like:

overlap

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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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IC 5146 Cocoon Nebula (C19)

By | 2014-09-06T14:04:31+00:00 14 August 2012|Categories: Caldwell, Nebula, NGC Summer|

Reflection/emission nebula, Cygnus
Caldwell 19, Finest NGC 99b, SAC110 45
Mag. 10, Size 12’x12′
2012-08-08
200mm f5 Newtonian MPCC Guided
Canon EOS 350D Modded, Astronomik CLS
10x180s 4x240s, darks, flats,  ISO 800
Captured in APT 1.93
Processed in Nebulosity and PS CS5
Need more subs as sky lost transparency.

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