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Iris Nebula NGC 7023 / C4

2020-09-23T20:59:10+00:0023 September 2020|Caldwell, Nebula, News, NGC Summer|

Bringing out the all the dusty, dark material leaves me with a horrible background.

Object IDIris Nebula
NGC 7023 / C4
Details2020-09-19
Mag. 6.8
Telescope250mm f4.8 Newtonian, MPCC
CameraQHY168C @15°C
Exposure(s)28x180s 10/50
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop

The Iris Nebula is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487. The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated SAO 19158.
Wikipedia

New QHY168c camera test on Eastern Veil

2020-09-17T08:01:27+00:0025 August 2020|Nebula, News, NGC Summer|

New camera testing. Different way of working with Gain and Offset needing to be chosen and probably using more shorter exposures than the CCD.
32Mb lights instead of 10Mb for the CCD means much longer processing in APP. Couldn’t use the flats as I moved the camera between flats and lights.

Object IDNGC6992 Eastern Veil Nebula
DetailsMag. 7, Size 3°
Telescope250mm f4.8 OO Newtonian
MPCC
CameraQHY168c @-15°C
Gain/Offset: 10/50 (unity)
No filters
Exposure(s)30x60s lights
20x darks
CaptureAPT
ProcessingAPP, Photoshop

IC1396 Elephant’s Trunk Nebula

2020-08-10T10:25:37+00:0010 August 2020|Nebula, News, NGC Summer|

Imaged areas around this a lot for HOYs but never this actual part. First time back using the MPCC without the LP filter this time to avoid internal reflections. Stars are better at 3 corners but top right still off – probably focuser alignment.

Object IDIC1396
Elephant’s Trunk
Details2020-08-08
Telescope250mm f4.8 Newtonian, MPCC
CameraAtik 460EX @-15°C
Baader Ha, OIII filters
Exposure(s)10x300s each Ha, OIII
Darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop

M92 RGB

2019-12-05T16:06:47+00:005 December 2019|Globular Cluster, News, NGC Summer|

Because sky conditions were very poor I went back to globulars as nebulosity can easily disappear in LP and fog. APP got rid of the massive gradients and LP quite well I think.

Object IDM92 (NGC6341)
DetailsSize 14′, Mag. 6.3
Hercules
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)10x180s ea RGB 1×1
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop

Cygnus Wall NGC 700 (Caldwell 20)

2019-09-21T16:27:20+00:0021 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Part of the North America nebula – the Central America part – seems to be known as the Cygnus Wall. Can only fit a small part of this object in my FOV.

Object IDNGC 7000, C20
DetailsMag. 4
Size: 120′ x 100′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX, Baader filters
-15C
Exposure(s)10x300s ea in Ha and OIII
CaptureAPT
ProcessingAPP, Photoshop
Mapped HOO and moved to the blue end

Cave Nebula Sh2-155 / Caldwell 9

2019-09-21T16:29:23+00:009 September 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

Sh2-155 is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula. Sh2 designation because it’s part of the Sharpless Catalog (1959) of 312 HII regions. About 2400 light years from Earth and a stellar nursery.

Narrowband filters really do cut through the murky, light polluted skies of Edinburgh so well. Obviously false colour, has to be for narrowband, but can’t decide which is the best so two different tone mappings: SII Ha OIII -> RGB and Ha OIII SII

Object IDCave Nebula
Sh2-155 / C9
DetailsCepheus
Mag. 7.7, 50′ x 30′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)10 x 180s each Ha OIII SII 2×2
CaptureAPT
ProcessingDSS, Nebulosity, Photoshop

Iris Nebula NGC 7023 / Caldwell 4

2019-08-29T12:59:19+00:0029 August 2019|Caldwell, Nebula, News, NGC Summer|

Been meaning to do this one for ages. Not easy because the background gas and dust can be easily lost in the light pollution and noise.

“The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +6.8 star, SAO 19158.”
Wikipedia

Object IDIris Nebula
NGC 7023 / C4
DetailsCepheus
Mag. 6.8, 18′ x 18′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)10 x 180s each RGB 1×1
CaptureAPT
ProcessingNebulosity, Photoshop

Cocoon nebula IC5146 / Caldwell 19 RGB

2019-08-29T12:55:55+00:0028 August 2019|Caldwell, Nebula, News, NGC Summer|

“IC 5146 (also Caldwell 19, Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula.”
Wikipedia

Object IDCocoon Nebula
IC 5146 / C19
DetailsCygnus
Mag. 7.2, 12′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)9 or 10 x 180s each RGB 1×1
CaptureAPT
ProcessingNebulosity, Photoshop

NGC 6888 / Caldwell 27 Crescent Nebula SHO

2019-09-21T16:29:35+00:0028 August 2019|Caldwell, Narrowband, Nebula, News, NGC Summer|

A new one for me

Object IDNGC 6888
Crescent Nebula
DetailsCygnus
Mag. 7.4, 18′ x 12′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)7 x 300s each Ha, OIII, SII
CaptureAPT
ProcessingDSS, Nebulosity, Photoshop
Mapped SII, Ha, OIII -> RGB

Pelican Nebula TR IC 5070 HOYS-CAPS data

2019-09-15T22:21:49+00:0014 September 2019|HOYS, Nebula, News, NGC Summer|

A by-product of doing HOYS-CAPS data for V1490Cyg in Tri-colour R, decided to make a stacked image out of it. 30 subs over 6 months.

At least 4 Herbig-Haro objects imaged in this and marked out in the greyscale version.

Object IDIC 5070
Pelican Nebula
DetailsCygnus
Mag. 8, 60’x50′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)30x180s R
CaptureAPT
ProcessingDSS, Nebulosity, Photoshop

“The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555. Millions of years from now this nebula might no longer be known as the Pelican, as the balance and placement of stars and gas will leave something that appears completely different.”

“Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionized gas ejected by said stars collide with nearby clouds of gas and dust at speeds of several hundred kilometers per second. Herbig–Haro objects are ubiquitous in star-forming regions, and several are often seen around a single star, aligned with its rotational axis. Most of them lie within about one parsec (3.26 light-years) of the source, although some have been observed several parsecs away. HH objects are transient phenomena that last around a few tens of thousands of years. They can change visibly over quite short timescales of a few years as they move rapidly away from their parent star into the gas clouds of interstellar space (the interstellar medium or ISM). Hubble Space Telescope observations have revealed the complex evolution of HH objects over the period of a few years, as parts of the nebula fade while others brighten as they collide with the clumpy material of the interstellar medium.”

Wikipedia

Pelican Nebula HaRGB IC 5070

2019-08-16T22:39:18+00:0013 August 2019|HOYS, Nebula, News, NGC Summer|

A by-product of doing HOYS-CAPS data for V1490Cyg in HaRGB, decided to make a colour image out of it even though only 3 subs for each filter.

Object IDIC 5070
Pelican Nebula
DetailsCygnus
Mag. 8, 60’x50′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Exposure(s)3x180s RGB, 3x300s Ha
CaptureAPT
ProcessingDSS, Nebulosity, Photoshop

Cygnus Wall – red channel only

2019-08-29T12:07:54+00:0023 July 2019|Caldwell, Nebula, News, NGC Summer|

After gathering HOYS-CAPS data thought I’d give this a quick go in red channel only.

Object IDCygnus Wall
Details“Mexico and Central American” part of North America Nebula
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
IDAS P2 LP filter
8x180s 2×2, darks, bias, flats
-11C
CaptureAPT
ProcessingNebulosity, Photoshop

IC 5146 Cocoon Nebula (C19) #2

2015-10-05T12:50:33+00:0011 September 2015|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.

Cocoon from multiple dates and telescopes

2017-01-31T10:52:42+00:006 September 2014|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

IC 5146 Cocoon Nebula (C19)

2014-09-06T14:04:31+00:0014 August 2012|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.

NGC 6960 Western Veil (C34) Reprocessed 2017-03-28

2017-03-31T15:55:30+00:0030 March 2017|Caldwell, Finest NGC, Nebula, News, NGC Summer|

Supernova remnant, Cygnus (“Witch’s Broom”)
Caldwell 34, Finest NGC 99a, SAC110 44
Size 70’x6′
2011-09-20
200mm f5 Newtonian MPCC Guided
Canon EOS 350D MODDED, Astronomik CLS
5x240s 15x180s, darks, flats,  ISO 800
Captured in APT
Processed in Nebulosity and PS CS5

First light with the modded 350D. So much easier to capture and process the nebulosity.

Reprocessed in 2017-03-28 with Adobe Lightroom.

Original image:

NGC 6992/6995 Eastern Veil (C33) – reprocessed

2017-03-06T11:19:03+00:0021 February 2017|Caldwell, Finest NGC, Nebula, News, NGC Summer|

Supernova remnant, Cygnus
Caldwell 33, Finest NGC 99b, SAC110 45
Size 60’x8′
2011-08-24
200mm f5 Newtonian MPCC Guided
Canon EOS 350D, Astronomik CLS
5x240s 20x180s, darks, flats,  ISO 800
Captured in APT
Processed in Nebulosity and PS CS5
2017-02-21 Re-processed in Lightroom CC

NGC 6995 is the irregularly shaped nebulosity in the left of the image, and NGC 6992 is the curved arc in the right of the image.

An incredibly rare and clear night with the Milky Way easily visible.
Original image: