Galaxy

/Galaxy

M101 (NGC 4321)

By |2020-04-19T19:59:23+00:0017 April 2020|Categories: 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.

Object ID M101, NGC 4321
Details Spiral galaxy, Ursa Major
Mag. 9.5
Size 7.4’x6.3′
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 20x180s each RGB
darks, flats, bias
Capture APT
Processing APP, Photoshop
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M81 Ha and RGB

By |2020-03-23T15:06:11+00:0023 March 2020|Categories: Galaxy, M61-90, News|

A layer of Ha added on top of RGB to bring out the emission regions in red.

Object ID M81 Bode’s Nebula
Details 2020-03-22 21:17 – 22:23 UT
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX
Baader Ha and RGB filters
Exposure(s) 10x180s each RGB 2×2
8x300s Ha 2×2
Capture APT
Processing APP, Photoshop
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M51 with synth G

By |2020-02-23T12:44:17+00:0023 February 2020|Categories: Galaxy, News|

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

Object ID M51 Whirlpool Galaxy
Details Red channel 2020-02-15
Blue channel 2020-02-18
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX@15C
Baader RGB
Exposure(s) 15x180s ea RB
darks, flats, bias
Capture APT
Processing SIRIL (first time)
Photoshop
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Supernova SN 2020ue in NGC 4636

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

Object ID SN 2020ue
NGC 4636
Details 2020-01-19 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
Telescope 250mm f4.8 OO Newtonian
Camera Atik 460EX @-15C
Exposure(s) 5x120s 2×2 TR
Capture APT
Processing Nebulosity, Muniwin
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NGC4565 / Caldwell 38 Spindle Galaxy

By |2019-04-01T16:19:57+00:001 April 2019|Categories: 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 ID NGC 4565, Caldwell 38 Spindle Galaxy
Details 2019-03-31
Telescope 203mm RC8 f8
Camera Atik 460Ex @-20C
Badder RGB filters
IDAS P2 LP filter
Exposure(s) 10x240s 2×2 RGB
Darks
Capture APT
Processing Nebulosity, Photoshop
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M63 Sunflower Galaxy

By |2019-04-01T15:45:24+00:001 April 2019|Categories: Galaxy, News|

Pretty noisy, bad gradients and difficult to process.
RGB combined with L channel from 2015-04-20

Object ID M63 Sunflower Galaxy
Details 2019-03-24
Telescope 203mm RC8 f8
Camera Atik 460Ex @-20C
Badder RGB filters
IDAS P2 LP filter
Exposure(s) 10x180s 2×2 RGB
Darks
Capture APT
Processing Nebulosity, Photoshop
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M82 RGB

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

Just a few frames before clouds so a bit grainy.

Object ID M82 Cigar galaxy
Ursa Major
Details 2019-02-09
Telescope 250mm f4.8 Newtonian
IDAS P2 filter
Camera Atik 460EX, Baader RGB
Exposure(s) 4 x 180s each filter
darks
Capture APT
Processing Nebulosity, Photoshop
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Supernova 2018 ivc in M77

By |2018-12-06T21:49:01+00:004 December 2018|Categories: Galaxy, M61-90, News, Other|

First supernova for me.

Object ID SN 2018 ivc in M77
Type II supernova
Details 2018-12-03 22:10 – 22:39 UT
Telescope 250mm f4.8 Newtonian, MPCC, IDAS P2
Camera Atik 460EX at -20C
Exposure(s) L 10x90s 1×1
Capture APT
Processing Nebulosity, Photoshop
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