M100 (NGC 4321

2022-03-21T10:03:11+00:0021 March 2022|Galaxy, M91+, News|

A grand design spiral galaxy in Coma Berenices, 55 million light years away and part of the Virgo cluster.
V and R filters used

Object IDM100, NGC 4321
Coma Berenices
7.4′ x 6.3′
Mag. 9.5
Details2022-03-20
Telescope240mm f4.8 Newtonian
R, V filters
CameraAtik 460EX @-10 °C
Exposure(s)20 x 180s V
20 x 180s R
d,f,b
CaptureNINA
ProcessingAPP, Photoshop

Galaxies Galore – Stephan’s Quintet and NGC 7331/C30

2021-12-08T09:21:55+00:0010 November 2021|Caldwell, Galaxy, News, NGC Autumn|

Stephan’s Quintet is to the left, consisting of 4 related galaxies and NGC 7320 which is a foreground galaxy. Their brightness’s range from +14.6 to +15.7.
NGC 7318B is colliding with gas in the group, producing a huge shock wave bigger than the Milky Way, spreading through the medium between the galaxies, heating the gas to millions of degrees, emitting X-rays.
A sixth galaxy, NGC 7320C appears to be connected by a tidal tail (just visible) to NGC 7319.

NGC 7331 or Caldwell 30 (to the right) is similar in size and structure to the Milky Way, 40M light years away. A discovery by William Herschel in 1784. It is the main body in the NGC 7331 Group, which contains unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These other galaxies are all much further away (~300M ly), so not related to NGC 7331.

Object IDStephan’s Quintet and NGC 7331/C30
DetailsGalaxy Cluster
Pegasus
2021-11-03
Telescope250mm f4.8 Newtonian
MPCC
IDAS D3
CameraQHY168C @-15°C
Exposure(s)15x180s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop

NGC 6939 & NGC 6946 / C12 Fireworks Galaxy

2021-12-08T09:22:36+00:0024 November 2021|Galaxy, News, NGC Summer, Open Cluster|

Cepheus near the border with Cygnus. Bright Moonlight causing some background gradients.

NGC 6939, discovered by William Herschel of course, is quite old for an Open Cluster, between 1 and 1.3 billion years. It also lies about 400 parsecs above the galactic plane, a little unusual for Open Clusters as they are usually within the plane of the galaxy, hence the alternative name of Galactic Clusters.

NGC 6946 (also discovered by William Herschel) is about 25 million light years away and resides in the Virgo Supercluster. It’s known as the Fireworks Galaxy because it seems to be a hive of supernovae; ten have been observed in the 20th and 21st centuries alone. This is about 10 times the rate observed in our own galaxy, even though the Milky Way has twice as many stars. In fact more supernovae have been observed in this galaxy than any other.

During 2009, a bright star within NGC 6946 flared up over several months to become over one million times as bright as the Sun. Shortly thereafter it faded rapidly. Observations with the Hubble Space Telescope suggest that the star did not survive, although there remains some infrared emission from its position. This is thought to come from debris falling onto a black hole that formed when the star died. This potential black hole-forming star is designated N6946-BH1. The progenitor is believed to have been a yellow hypergiant star. Wikipedia

Object IDNGC6939 & NGC 6946 / C12 Fireworks Galaxy
DetailsGalaxy and Open Cluster
Cepheus
2021-11-20
Telescope250mm f4.8 Newtonian
MPCC
Tri-band
CameraQHY168C @-15°C
Exposure(s)25x300s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop

M31 tri-band test

2021-09-24T21:10:18+00:009 September 2021|Galaxy, M31-60, Narrowband, News|

Test to see if imaging M31 in tri-band is worth it. Yes! Detail in there that I haven’t seen in other images I’ve taken. Planning a 6 pane mosaic of the galaxy.

Object IDM31 Andromeda Galaxy
Details2021-09-07
Telescope250mm f4.8 Newtonian
Tri-band filter
CameraQHY168C @-15°C
Exposure(s)10x300s
darks, flats, dark-flats
CaptureNINA
ProcessingAPP, Photoshop

C5 The Hidden Galaxy

2021-04-14T13:59:46+00:0014 April 2021|Caldwell, Galaxy, News|

Another  go a this for the ASE Caldwell Project. A really tricky one this. Hidden in the dust from our own galaxy, this would actually be naked eye brightness if not obscured. From two sets of data but still challenging.

Object IDC4 NGC7023 Iris Nebula
DetailsMag. 9.1
Size 21.4′ x 20.9′
2021-04-11
Telescope250mm f4.8 Newtonian, MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)25 x 240s, 14x180s
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI

C3 NGC 4236

2021-04-14T14:03:13+00:0014 April 2021|Caldwell, Galaxy, News|

Added more data to this one but still very tricky. More horrible gradients to deal with. The IDAS P2 LP filter is no longer doing it’s job with the change in LP sources round here. Have now bought the IDAS D3 to see if that is any better as it deals more with LED lighting.

Object IDC3 NGC 4236
Draco
DetailsMag. 10.5
Size 121′.9 × 7′.2
2021-04-12
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)20x180s, 25x300s
10/50 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz DeNoise AI

M51 Whirlpool Galaxy

2021-03-20T22:35:36+00:0018 March 2021|Galaxy, M31-60, Nebula, News|

Didn’t expect to get too much out of this because of the high wispy cloud and only got 9 subs, but not too bad.

Object IDM51
Canes Venatici
DetailsMag. 8.4
Size 11.2′ x 6.9′
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)29x180s
10/50 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz DeNoise AI

M109

2021-01-25T14:53:38+00:0025 January 2021|Galaxy, M91+, News|

Strong moonlight

Object IDM109
Ursa Major
Details2021-01-23
Mag. 10.6
Size 7.6’x4.7′
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)15x240s
2/20 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI

M108

2021-01-25T14:51:56+00:0025 January 2021|Galaxy, M91+, News|

Strong moonlight

Object IDM108
Ursa Major
Details2021-01-23
Mag. 10.7
Size 8.7’x2.2′
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)20x240s
2/20 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI

M95, M96

2021-02-22T18:10:52+00:0022 February 2021|Galaxy, M91+, News|

Object IDM95, M96
Leo
Details2021-02-14
Mag. 11.4 // 10.1
Size 3.1’x2.9′ // 7.6’x5.2′
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS P2
Exposure(s)15x240ss
2/20 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI

M82

2021-01-25T15:03:27+00:0025 January 2021|Galaxy, M61-90, News|

Strong moonlight

Object IDM82
Ursa Major
Details2021-01-24
Mag. 8.4
Size 11.2’x4.3′
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
Tri-band
Exposure(s)15x300s
2/20 gain/offset
darks, flats, bias
CaptureNINA
ProcessingAPP, Photoshop, Topaz Denoise AI

M101 (NGC 4321)

2020-11-03T11:48:08+00:0017 April 2020|Galaxy, M91+, News|

Added twice as many frames as normal – still noisy. Probably need longer exposures. Bad gradients needed a lot of work in APP.
UPDATE: Used the demo versions of TOPAZ DeNoiseAI and it makes a huge difference. Removes noise without removing details. Other de-noising seems to just blur features – this is far more intelligent.

Object IDM101, NGC 4321
DetailsSpiral galaxy, Ursa Major
Mag. 9.5
Size 7.4’x6.3′
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-15C
Exposure(s)20x180s each RGB
darks, flats, bias
CaptureAPT
ProcessingAPP, Photoshop