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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

M51 with synth G

2020-12-13T14:55:54+00:0023 February 2020|Galaxy, News|

UPDATE: 2020-12-13 Used TOPAZ De-noise AI top remove noise and sharpen

Green channel was very noisy with horrible LP gradients in it so synthesised G from R + B. Still noisy though.

Object IDM51 Whirlpool Galaxy
DetailsRed channel 2020-02-15
Blue channel 2020-02-18
Telescope250mm f4.8 OO Newtonian
CameraAtik 460EX@15C
Baader RGB
Exposure(s)15x180s ea RB
darks, flats, bias
CaptureAPT
ProcessingSIRIL (first time)
Photoshop

Supernova SN 2020ue in NGC 4636

2020-01-19T20:57:00+00:0019 January 2020|Galaxy, News, Other|

Object IDSN 2020ue
NGC 4636
Details2020-01-19 01:12:57 UT
Muniwin gives mag. as 12.56
RA = 12 42 47
DEC = +2 39 35
FWHM = 2.77 pxl
Sky = 1708.31 ADU
Sky dev. = 50.19 ADU
Net intensity = 94384.6 ADU
Noise = 271.5 ADU
S/N ratio = -25.4 dB
Brightness = 12.5627 mag
Error = 0.0031 mag
Telescope250mm f4.8 OO Newtonian
CameraAtik 460EX @-15C
Exposure(s)5x120s 2×2 TR
CaptureAPT
ProcessingNebulosity, Muniwin

NGC4565 / Caldwell 38 Spindle Galaxy

2019-04-01T16:19:57+00:001 April 2019|Caldwell, Galaxy, News|

Processed 3 different ways – give different results, not sure which I like best. Still too noisy – need many more exposures.
Interesting edge-on spiral galaxy in Coma Berenices, surprisingly large (14.9′ x 2′) but faint (9.60 but surface brightness 13.3). It is actually intrinsically more luminous than the Andromeda Galaxy. First seen by William Herschel in 1785. Also visible lower right is NGC 4562.

Object IDNGC 4565, Caldwell 38 Spindle Galaxy
Details2019-03-31
Telescope203mm RC8 f8
CameraAtik 460Ex @-20C
Badder RGB filters
IDAS P2 LP filter
Exposure(s)10x240s 2×2 RGB
Darks
CaptureAPT
ProcessingNebulosity, Photoshop

M82 RGB

2019-02-12T16:41:19+00:0012 February 2019|Galaxy, M61-90, News|

Just a few frames before clouds so a bit grainy.

Object IDM82 Cigar galaxy
Ursa Major
Details2019-02-09
Telescope250mm f4.8 Newtonian
IDAS P2 filter
CameraAtik 460EX, Baader RGB
Exposure(s)4 x 180s each filter
darks
CaptureAPT
ProcessingNebulosity, Photoshop