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M5 (NGC 5904)

By |2020-04-16T11:45:09+00:0016 April 2020|Categories: Globular Cluster, M1-30, News|

A new globular for me and constellation Serpens

Object ID M5, NGC5904
Details Globular Cluster, Serpens
Mag. 5.95
Size 23′
2020-04-15 23:54 UT ->
Seeing very good
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 10x180s each RGB
darks, flats, bias
Capture APT
Processing APP, Photoshop
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Medusa nebula HOO

By |2020-04-16T11:40:30+00:0016 April 2020|Categories: News, NGC Winter, Planetary Nebula|

Done in RGB before, narrowband this time.

Object ID Medusa nebula
PK205+14.1, Abell 21, Sharpless 2-274
Details Planetary nebula, Gemini
Surface brightness about 16
20-04-13 22:06 UT ->
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Exposure(s) 10x300s each Ha, OIII
Capture APT
Processing APP, Photoshop
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Mizar and Alcor RGB

By |2020-04-12T17:03:46+00:0012 April 2020|Categories: News, Other|

Something to image in the strong moonlight. Mizar (Zeta Ursae Majoris) has 2 partners: the brighter one you can see is 14 arcsecs away at mag 4 but there’s also one at 0.04 arcsecs separation and mag. 2 that we can’t see separately. Alcor is a binary too with an 8th magnitude red dwarf companion, 1 arcsec away from the primary.

Object ID Mizar, Alcor
Details 2020-04-06 21:03:20UT
Telescope 250mm f4.8 Newtonian
Camera Atik 460EX @-15C
Baader RGB filters
Exposure(s) 3x30s ea RGB 1×1
Capture APT
Processing APP, Photoshop
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NGC188 (C1)

By |2020-04-07T21:23:16+00:007 April 2020|Categories: Caldwell, News, NGC Winter, Open Cluster|

Never noticed this one before. Very close to the pole so easy guiding as nothing moves very much round there.

Object ID NGC188, Caldwell 1
Open Cluster, Cepheus
Mag. 10
Size 11′
Details 2020-04-06 22:42 UT
Telescope 250mm f4.8 OO Newtonian
Camera ATIK 460EX @-15C
Exposure(s) 3x180s 1×1 TR, 2x180s 1×1 TG, TB
Darks, flats, bias
Capture APT
Processing APP, Photoshop
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HOYS IC1396A stacked

By |2020-04-04T22:32:30+00:004 April 2020|Categories: HOYS, News|

This is all my Red HOYS images of IC1396A that have been uploaded to HOYS since June 2109

Object ID IC1396A HC115
Details 38 images each 3 stacked subs
2019-2020
Telescope 250mm f4.8 Newtonian
Camera ATIk 460EX @-15C
Exposure(s) 38 x 3 x 180s 1×1 TR filter
darks, flats, bias
Capture APT
Processing Nebulosity, APP, Photoshop
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Maria Crisium & Nectaris, Theophilus, Cyrillus, Catharina Infrared

By |2020-04-04T16:42:16+00:0029 March 2020|Categories: Moon, News|

Two daytime infrared imaging sets

Object ID Maria Crisium & Nectaris, Theophilus, Cyrillus, Catharina Infrared
Details 2020-03-28/29
Daytime
Telescope 250mm f4.8 OO Newtonian
Camera ZWO ASI 290MC
ZWO Infrared filter
Exposure(s) 30s AVI @47fps 1024×768
Capture FireCapture
Processing 10% frames stacked in Autostakkert
Final process in Photoshop
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HAT-P-3b Exoplanet transit

By |2020-04-07T17:54:32+00:003 April 2020|Categories: Exoplanet, News|

The fit seems to match the predicted parameters in this case. Terrible seeing made guiding very poor (1.2″ usually get 0.5″) and strong moonlight made it messy data but the software was still able to pull a good fit out of the data. This graph is the reprocessed version by the ExoClock team, but very similar to the original.

Object ID HAT-P-3b
Details Exoplanet, Ursa Major
2020-04-02 21:28:42 – 01:19:16
mag: 11.025
depth: 15.84 mmag (0.01584)
duration: 2.22 h
Telescope 250mm f4.8 OO Newtonian
Camera ATIK 460EX @-15C
Baader TR filter
Exposure(s) 269x50s 1×1 exposures
darks, flats, bias
Capture APT
Processing HOPS 6.0
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Venus 2020-04-02

By |2020-04-02T16:51:14+00:002 April 2020|Categories: News, Venus|

Probably my best Venus so far.

Object ID Venus
Details 2020-04-02 14:54 UT
Terrible seeing and gusty wind shaking the scope
Telescope 250mm f4.8 Newtonian
Camera ZWO ASI 290mc
ZWO Infrared filter
Exposure(s) 120s 220fps SER file
Capture FireCapture
Processing Registax 6, Photoshop
Resized 120%
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Mention in the ExoClock Newsletter 5, 31 March 2020

By |2020-04-01T21:21:02+00:001 April 2020|Categories: Exoplanet, News|

“Highlighted observations

There are quite many interesting observations thanks to all of you. For this month’s issue, two are the highlighted ones, for WASP-104b. This is a planet that was marked with a medium priority and there are only few observations since its discovery. The two observations were carried out at the same date by two observers at different locations. The uncertainty on the predicted mid-time (shown with red) was quite high. Both observations show a time shift of roughly 15 minutes. This is a good example of how simultaneous observations can contribute to cross calibrate the results. We will reanalyse the data to achieve the highest possible precision.

Congrats to our members Mauro Calo from Italy and Mark Phillips from the UK for their observations!”

The ExoClock team reprocessed my data to give a more accurate representation so is different from my initial report.

 

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