Pages
Gallery
Categories
- Hyperstar III and Trius SX-814C
- Uncategorized
- Macrophotography
- Carbon Stars
- Picture of the Week
- Talks and Presentations
- Photographic courses
- Hyperstar III and SXVF-M26C
- Canon 200mm prime lens
- Astronomy Image of the Day
- Exhibitions
- CCD Images
- Published Work
- Site News
- Writing
- News
- Creating mosaics
- Star Vistas
- House and home
Visitors
Admin
Tags
Author Archives: Greg Parker
Picture of the Week
A regular visitor to this website made the valid comment that the Andromeda image has been the latest one to be shown for far too long. Why has it been up there for so long? Very simple really, I haven’t … Continue reading
M31 – the Final Cut
I just found another 6-hours of 40-minute subs of M31 taken with the Sky90 array, and I added this to the earlier composite. You can see the result above and it is virtually no different from the previous result. I … Continue reading
Composite Rosette Nebula
This image of the Rosette nebula is a composite using data from the 200mm lenses with ASI 2600MC Pro CMOS camera and Optolong filter, together with Hyperstar 4 data using an ASI 2600MC Pro CMOS camera and a UV/IR cut … Continue reading
A Maths Problem for You
Here’s a simple little maths problem for you to look at, if you like that sort of thing. For what value of x does the following equation hold true? x^n + 2.x^n+1 = x^n+3 Where x^3 is x cubed.
Posted in News, Projects
10 Comments
Definitive M31
I sent a friend a low-res version of M31 and they asked if they could have the hi-res version to print out and put on their wall. Now it gets embarrassing – can’t find the hi-res version anywhere. So I … Continue reading
The Full Stellar Spectral Classification
Kemble’s Cascade alone has R N and S-type stars in the frame. In case the labelling on the image itself doesn’t come out too well, the TOP labelled star is BD Camelopardalis S-type, the MIDDLE star is V Camelopardalis N-type, … Continue reading
Posted in News, Writing
Leave a comment
Stellar Spectral Classes
I just put this montage together of stellar spectral classes with some real examples.
Posted in Writing
Leave a comment
M33 – The Triangulum Galaxy
Absolutely all the data I have on the Triangulum Galaxy.
The Propus Region of Gemini
Now there’s a LOT going on in this one! Central object is the Jellyfish nebula with bright star Propus. Top right we have TWO open clusters, the larger one is M35, and the smaller golden one to its right is … Continue reading
Posted in Canon 200mm prime lens, mini-WASP Array
Leave a comment
The Whole of Canis Minor
The whole of Canis Minor. Canis Minor only comprises 2 stars – Procyon (bright white star bottom left) and Gomeisa (blue star towards top right). This is a 2-frame mosaic using the Canon 200mm prime lenses and the M26C OSC … Continue reading
Posted in Canon 200mm prime lens, mini-WASP Array
Leave a comment