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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

Rosette Ha mosaic 6 sessions

2020-03-05T19:40:33+00:005 March 2020|Narrowband, Nebula, News, NGC Winter|

Still a work in progress. APP is great for doing these sorts of mosaics.
5000 pixel size reduced to 2000 for this.

Object IDNGC2244/2237
Rosette Nebula
Monoceros
Details6 sessions over Jan – March 2020
Telescope250mm f4.8 Newtonian
CameraAtik 460EX
Baader 7nm Ha filter
Exposure(s)Nominally 6 x 15 x 300s
but probably fewer since some will be discarded
CaptureAPT
ProcessingAPP, Photoshop

Heart of the Rosette NGC2244

2020-02-06T17:57:40+00:006 February 2020|HOYS, Nebula, News|

Data taken for the HOYS project of NGC2244 in Hydrogen-Alpha. This was taken in strong moonlight but Ha images are much less affected. RGB was a non-starter with the Moon so strong.

Object IDNGC2244 Rosette Nebula HOYS 008
Details2020-02-04
22:48:47 – 23:36:01
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @15C
Exposure(s)10x300s Baader Ha
bin 1×1, darks, flats, bias
CaptureAPT
ProcessingNebulosity, Photoshop

IC349 Barnard’s Merope Nebula

2020-01-07T17:25:55+00:007 January 2020|Nebula, News, NGC Winter|

Thought I’d try and get the Merope Nebula as the whole Pleiades don’t fit in my FOV. But saw a flaw beneath Merope which turned out to be another nebula.

Object IDIC349 Barnard’s Merope Nebula
DetailsSize 0.5′, Mag. 13
Taurus
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)3x180s ea RGB 1×1
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop

NGC 2024 Flame Nebula RGB

2019-12-05T16:10:37+00:005 December 2019|Nebula, News, NGC Winter|

Wasn’t expecting it to be clear so this is a bonus. Only managed 5 of each colour though so quite noisy and Alnitak overpowers eveything.

Object IDNGC 2024 Flame Nebula
DetailsSize 30’x30′, Mag. 10
Orion
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)5x180s ea RGB 1×1
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop

Fish head nebula (IC1795)

2019-12-05T16:01:34+00:005 December 2019|Nebula, News, NGC Autumn|

This is a bit of a weird looking one! Stars to the left aren’t good shapes – probably combination of optical alignment, focus and collimation. Stars are over-processed too – should have been so much better.

Object IDIC1695 Fish head nebula (part of the Heart nebula)
DetailsSize 12’x12′
Cassiopeia
Telescope250mm f4.8 Newtonian
CameraAtik 460EX -15C
Exposure(s)20x300s ea Ha, OIII 2×2
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop
Processed SHO with synthetic SII

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

NGC 2174 Monkey Head nebula narrowband

2019-02-04T17:06:34+00:003 February 2019|Nebula, News, NGC Winter|

Some guiding problems so couldn’t use all subs.

Object IDNGC 2174 Monkey Head nebula
Mag. 6.8, Size 40′ Orion
Details2019-01-31
Telescope250mm f4.8 Newtonian, MPCC
CameraAtik 460EX @-20C
Baader Ha, OIII, SII filters
Exposure(s)8x300s 2×2 each
Darks
CaptureAPT
ProcessingNebulosity, Photoshop
SHO colour mapping

NGC 2264 Christmas Tree Cluster narrowband

2019-01-30T13:16:31+00:0030 January 2019|HOYS, Nebula, News, NGC Winter, Open Cluster|

After a HOYS-CAPS session added narrowband. Rat’s head in there?
No more MPCC and stars are much sharper at the edges.

Object IDNGC 2264, Christmas Tree Cluster
Details2019-01-29
Telescope250mm f4.8 Newtonian, MPCC
CameraAtik 460EX @-20C
Baader Ha, OIII, SII filters
Exposure(s)10x300s 2×2 each
Darks
CaptureAPT
ProcessingNebulosity, Photoshop
SHO colour mapping