Friday, 6 November 2020

Some galaxies and an Open Cluster

The galaxy images are in mono. I need to take some new luminance flats as there are dust bunnies showing!  

NGC6688 is a galaxy in Lyra, with some friends.






NGC2300 is a galaxy in Cepheus, interacting with an elliptical galaxy.




M34 is an open cluster in Perseus.



Friday, 16 October 2020

NGC 281 The Pacman Nebula in Cassiopeia

 This has taken a lot for time (for me), in total around 2hours 30 minutes per channel ,so around 10 hours total . I haven't tried to control the size of the stars,  will leave that, to another day maybe. The image has much less noise than most of the ones I do, because of the long integration time. The nebula is bigger than the field of view, I have missed the edges.



Wikipedia: NGC 281, IC 11 or Sh2-184 is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. This 20×30 arcmin sized nebulosity is also associated with open cluster IC 1590, several Bok globules and the multiple star, B 1. It collectively forms Sh2-184, spanning over a larger area of 40 arcmin. A recent distance from radio parallaxes of water masers at 22 GHz made during 2014 is estimated it lies 2.82±0.20 kpc. (9200 ly.) from us. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.

Wednesday, 14 October 2020

Mars and first colour image of Jupiter

 Mars was at its closest to Earth on 6th October, three days ago. It was quite high in the sky, so this is the best image I have to date.




The image of Jupiter was taken at the end of September, when it was low on the southern horizon, so in disturbed air.



Tuesday, 22 September 2020

NGC 281 Pacman Nebula in Cassiopeia

 Ongoing, really. Only have 1 hr 15 mins in each channel so far.  The field of view is smaller than the nebula. Also , I haven't tried to control the star size( though I have had little to show for it to date when trying on other pics, I have yet to find a work flow that I can follow with the software I use).







Best Mars image so far

 Good seeing last night and Mars was fairly high in the sky.  



Polar cap, clouds on the limb, no canals or martianssss.

Thursday, 10 September 2020

NGC40 Bow Tie Nebula in Cepheus

 The image is based on around 40 mins in each R, G, B and L, 118s subs, at a gain of 139. Calibrated with dark flats and flats.



Wikipedia:     NGC 40 (also known as the Bow-Tie Nebula and Caldwell 2) is a planetary nebula discovered by William Herschel on November 25, 1788, and is composed of hot gas around a dying star. The star has ejected its outer layer which has left behind a smaller, hot star with a temperature on the surface of about 50,000 degrees Celsius. Radiation from the star causes the shed outer layer to heat to about 10,000 degrees Celsius, and is about one light-year across. About 30,000 years from now, scientists theorize that NGC 40 will fade away, leaving only a white dwarf star approximately the size of Earth.

First Image of Mars

 Last night I captured several 1000 frame videos of Mars. Unfortunately, the highest resolution ones were too dark and I haven't been able to process the images.  I was able to get some red, green and blue images at a lower resolution and so have my first ever image of Mars, in colour too.



I also processed an image of Saturn, captured in mono, on 8th August.