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 ID||Albireo, Beta 1,2 Cygni|
|Details||2018-08-23 20:57 – 21:00 UT|
|Telescope||200mm Newtonian f5|
|Camera||ZWO ASI290MC, IR/UV block|
|Exposure(s)||21 x 5s with 5s delay between|
|Processing||Nebulosity 3, Photoshop|
One of the best I’ve seen. Almost overhead too.
|Object ID||Noctilucent Clouds|
|Details||2018-06-18 23:12 UT|
|Exposure(s)||1.6s @ f3.5 ISO 400|
First sighting this year and one of the very earliest to appear on Twitter.
Venus at the bottom with Castor and Pollux above. ß Aurigae (Menkalinan) to the upper right.
|Object ID||Noctilucent Clouds|
22:52 UT, 22:53 UT
|Telescope||Kit lens 27mm at f4
|Exposure(s)||ISO 400 1.6s|
Just for test purposes but quite fun. Focus not spot on though.
|Object ID||Mizar and Alcor|
|Details||Double star(s) Ursa Major|
|Telescope||RC8 at f/8|
|Camera||Atik 460EX (-15C) and SX filter wheel
IDAS P2 LPR filter
|Exposure(s)||RGB 6x10s each 2×2
darks, no flats or bias
|Capture||APT, no guiding|
|Processing||Stacked in Nebulosity, processed in Photoshop|
A very close conjunction.
|Object ID||Jupiter and Mars in conjunction|
|Details||A very close conjunction, less than 14′ between the two planets. Poor seeing and very low altitude <15degrees|
|Date/Time||2018-01-7 05:47UT, Inset 06:03UT|
|Telescope||C80ED @ f7.5|
|Exposure(s)||30s, inset 0.6s
no darks, flats or bias
|Processing||Processed in Photoshop|
Taken in the hills along the Thieves Road near West Linton.
Single 25s image RAW ISO 800 18mm f9
DIY 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).
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.
2013-08-30 21:28 UT
200mm f5 newtonian, unguided
4×30s ISO 800, darks
Canon EOS 350D modded, Astronomik CLS
Captured in APT, Processed in Nebulosity, PS CS5
Discovered 14 Aug 2013 by Koichi Itagaki of Yamagata, peaked at mag. 4.5.
It’s about 13,000 light years away. Was originally quite blue but is now much redder – this is what sometimes happens as novae evolve.
From Sky & Telescope
The nova was discovered by Koichi Itagaki of Yamagata, Japan, in an image taken at 14hhUniversal Time (2 p.m. EDT) on August 14th. It was not present in a photo that he took the previous day. Here is the announcement from the IAU’s Central Bureau for Astronomical Telegrams. The star was apparently 17th magnitude before erupting, so it brightened roughly 100,000-fold to its peak on August 16th.
A classical nova happens in a special kind of tightly-orbiting binary star system: one where a relatively normal star pours a stream of hydrogen onto the surface of a companion white dwarf. When the layer of fresh hydrogen on the white dwarf’s surface grows thick and dense enough, the bottom of the layer explodes in a runaway hydrogen-fusion reaction — a hydrogen bomb in the shape of a thin shell roughly the size of Earth. The underlying white dwarf remains intact, and as new hydrogen builds up, the process may repeat in a few years to tens of thousands of years.
200mm f5 Newtonian MPCC unguided
Canon EOS 350D
15x10s darks ISO 400
Captured in APT
Processed in Nebulosity and PS CS5
Test shot to get everything working again after the summer break.
1x20s ISO 200
No dark frame or filters
Still not dark enough for normal astrophotography so trying some widefield images.