2MASS J17554042+6551277 first star imaged by JWST

2022-03-17T17:19:31+00:0017 March 2022|News, Other|

The first star imaged by JWST after alignment and focusing complete

Object ID2MASS J17554042+6551277
Details2022-03-16 23:30 – 22:43 UT
Telescope240mm f4.8 Newtonian
R filter
CameraAtik 460EX @-10 °C
Exposure(s)5 x 180s
d,f,b
CaptureNINA
ProcessingAPP, Photoshop

And here’s the actual image
Credits: NASA/STScI

(201) Penelope light curve

2022-02-22T12:30:07+00:0011 February 2022|Asteroid, News, Other|

A large main belt asteroid, discovered by Austrian astronomer Johann Palisa in 1879. Thought I’d try the same technique as for an eclipsing binary. One extra step in AstroImageJ to track the asteroid between frames. Didn’t get enough data to determine a period and comparison stars were impossible to find in this particular field so relative flux only.

Object ID(201) Penelope
Details2022-02-10
21:39:08 – 00:59:05 UT
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-10°C
V filter
Exposure(s)95 x 120s
darks, flats, bias
CaptureNINA
ProcessingAstroImageJ

V1297 Cas eclipsing binary

2022-05-12T14:53:07+00:007 February 2022|Eclipsing Binary, News, Other, Variable Star|

No predictions for transit times for this one so trial and error. Sadly missed both peaks and dips.

Object IDV1297 Cas
Eclipsing binary in Cassiopeia
Details2022-02-06
19:34 – 23:27 UT
Telescope250mm f4.8 Newtonian
Photometric V filter
CameraAtik 460EX @-10°C
Exposure(s)620 x 15s
darks, flats, bias
CaptureNINA
ProcessingAstroImageJ
V1297 apertures

NR CAM eclipsing binary

2022-05-12T14:53:16+00:0028 January 2022|Eclipsing Binary, News, Other, Variable Star|

Got both secondary and primary transits before cloud came in but had hoped to get both peaks to see if asymmetric or not which might indicate star spots. Primary transit is deeper than the secondary.

Wrote a How-To article on the ASE website about this: How to record an eclipsing binary transit light curve

Object IDNR CAM
Eclipsing binary in Camelopardalis
Details2022-01-27
18:01 – 22:22 UT
Telescope250mm f4.8 Newtonian
Photometric V filter
CameraAtik 460EX @-10°C
Exposure(s)476 x 25s
darks, flats, bias
CaptureNINA
ProcessingAstroImageJ

Finder chart and data:
AAVSO — Variable Star Plotter

V523 Cas eclipsing binary

2022-05-12T14:53:30+00:0025 January 2022|Eclipsing Binary, News, Other, Variable Star|

Cloud stopped play so caught the primary transit but not the secondary. Will try this one again since it transits so fast.

Object IDV523 Cas
Eclipsing binary star
Details2022-01-24
21:44 – 22:58 UT
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-10°C
Photometric R filter
Exposure(s)137 x 25s
darks, flats, bias
CaptureNINA
ProcessingAstroImageJ

AAVSO — Variable Star Plotter

PZ UMa eclipsing binary

2022-01-28T09:09:25+00:0018 January 2022|Eclipsing Binary, News, Other, Variable Star|

Thought I’d try to catch an eclipsing binary transit since no obvious exoplanet ones to do for last night. First processed in HOPS, since that’s what I know, but that obviously wants to map an exoplanet transit onto the data. Finally processed in AstroImageJ, which charted it quite well.

Object IDPZ UMa
Details2022-01-17
21:18 – 00:12 UT
Telescope250mm f4.8 Newtonian
R Photomeric filter
CameraAtik 460EX @-10°C
Exposure(s)155 x 60s
darks, flats, bias
CaptureNINA
ProcessingAstroImageJ

Photometry of Dwarf Nova in Gemini TCP J07094936+1412280 29

2022-01-04T20:54:18+00:003 January 2022|News, Nova, Other|

Still learning here but more consistent now with reprocessed data. Using AAVSO chart X27541GQ, comparison star 127, V mag. 12.701.

250mm f4.8 Newtonian
QHY168C @-15°C // Green channel only

29-12-2021 21:55 UT // TG mag. 12.48 // 540s
31-12-2021 23:31 UT // TG mag. 12.90 // 90s
01-01-2022 21:58 UT // TG mag. 13.29 // 90s
03-01-2022 21:58 UT // TG mag. 13.68 // 150s
04-01-2022 20:42 UT // TG mag. 13.88 // 150s

AAVSO X27541GQ data

Dwarf Nova in Gemini TCP J07094936+1412280 2022-01-01

2022-01-01T22:53:18+00:001 January 2022|News, Nova, Other|

Better conditions for photometry. V mag 13.29

31-Dec-2021 poor conditions, no image, gave 13.1

Main image is full colour (enhanced) but photometry using green channel only

Object IDTCP J07094936+1412280
Details01-01-2022 21:58:55 UT
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS D2
Exposure(s)3x30s
darks, flats, bias
CaptureNINA
ProcessingPre-processed, stacked and channels separated in Siril
Photometry in AstroImageJ
Composition in Photoshop

Dwarf Nova in Gemini TCP J07094936+1412280

2021-12-31T18:41:42+00:0031 December 2021|News, Nova, Other|

Reported on 28 Dec 2021
britastro.org/node/26461
TCP J07094936+1412280
Photometry using AstroImageJ gave me on V mag of 12.3. Comparison stars may not be the best.

Main image is full colour (enhanced) but photometry using green channel only

Object IDTCP J07094936+1412280
Details29-12-2021 21:55 UT
Telescope250mm f4.8 Newtonian
MPCC
CameraQHY168C @-15°C
IDAS D2
Exposure(s)3x180s
darks, flats, bias
CaptureNINA
ProcessingPre-processed, stacked and channels separated in Siril
Photometry in AstroImageJ
Composition in Photoshop

Mizar and Alcor RGB

2020-04-12T17:03:46+00:0012 April 2020|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 IDMizar, Alcor
Details2020-04-06 21:03:20UT
Telescope250mm f4.8 Newtonian
CameraAtik 460EX @-15C
Baader RGB filters
Exposure(s)3x30s ea RGB 1×1
CaptureAPT
ProcessingAPP, Photoshop

Supernova SN 2020ue in NGC 4636

2021-12-31T14:05:47+00:0019 January 2020|Galaxy, News, Other, Supernova|

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

Wide angle Milky Way shots from the Languedoc

2019-08-07T20:42:30+00:004 August 2019|Milky Way, News, Other, Wide Angle|

So – because there’s no night in Scotland from May to August, I went south to the Languedoc hills. Sainte-Polycarpe in the Aude region to be precise. First real use of my Skywatcher Star Adventurer mount. Great fun, still a lot to learn, but got some decent images. Also made a fun little video story of my holiday in a beautiful region of France.

Albireo – now it’s officially NOT a binary

2018-08-24T09:45:34+00:0024 August 2018|News, Other|

Everyone’s favourite double star is now officially not a binary system according to the latest GAIA data release. This is just to show that I don’t care – it’s still the best.

Object IDAlbireo, Beta 1,2 Cygni
Details2018-08-23 20:57 – 21:00 UT
Telescope200mm Newtonian f5
CameraZWO ASI290MC, IR/UV block
Exposure(s)21 x 5s with 5s delay between
CaptureSharpCap 3.1
ProcessingNebulosity 3, Photoshop

Testing RC8 and 460EX on Mizar and Alcor

2018-02-26T11:41:03+00:0026 February 2018|News, Other|

Just for test purposes but quite fun. Focus not spot on though.

Object IDMizar and Alcor
DetailsDouble star(s) Ursa Major
TelescopeRC8 at f/8
CameraAtik 460EX (-15C) and SX filter wheel
IDAS P2 LPR filter
Exposure(s)RGB 6x10s each 2×2
darks, no flats or bias
CaptureAPT, no guiding
ProcessingStacked in Nebulosity, processed in Photoshop

Jupiter and Mars conjunction 2018-01-7

2018-01-08T13:40:55+00:008 January 2018|Conjunction, Jupiter, Mars, News, Other|

A very close conjunction.

Object IDJupiter and Mars in conjunction
DetailsA very close conjunction, less than 14′ between the two planets. Poor seeing and very low altitude <15degrees
Date/Time2018-01-7 05:47UT, Inset 06:03UT
TelescopeC80ED @ f7.5
CameraCanon 600D
Exposure(s)30s, inset 0.6s
no darks,  flats or bias
CaptureAPT unguided
ProcessingProcessed in Photoshop


Wide angle test – Orion

2017-02-02T15:59:22+00:001 February 2017|News, Other|

Driven camera mountDIY wide angle mount using old ETX90EC mount. Horrible vignetting caused by IDAS filter in front of lens, but could be removed with flats. Proves the drive works though. Using an old fixed 135mm film lens (approx. 80mm equivalent).

2017-02-01 18:50UT
Canon EOS 600D, ISO 1600
5 x 25s, auto darks
135mm film lens – very cheap and old
2″ IDAS P2 LPR filter in front of lens
Processed in Nebulosity, PhotoShop and Lightroom.