Swansea Astronomical Society Blog

Friday, December 10, 2010

 

M82 with an Atik 314E colour camera and a 6", f/5 refractor

23 x 1 min exposures and 4 x 1 min 40s exposures were captured and stacked in Deep-Sky Stacker. The resulting 16bit Tiff image was post processed in Photoshop to produce this image of M82, the cigar galaxy:


A larger view

The Orion Nebula with the same camera in 2x2 binned monopchrome mode. With an 80mm refractor and an 0.5 focal reducer.
Keith Davies

Thursday, December 9, 2010

 

H-alpha narrowband image of the Horsehead and Flame nebulae

This narrowband image of the flame and horse head region was taken using a Atik 314L CCD camera with an ultra narrowband Hydrogen Alpha filter. The scope was a 80mm achromatic refractor and was guided using Guidemaster software with Shoestring Astronomy Guide USB Guideport Adapter. The image has been built up from 7 x 15 minute subs, dark-frame and bias-frame corrected and post processed in Photoshop CS5.

This image constitutes a "Work in Progress" as more colours channels will be added when possible.



Nikki Mackin
 

Deep Sky and the Sun

Deep Sky Astronomers have two lights to plague their efforts.
I wonder which is the worse:

'A lesser light to rule the night'

A modified SDC-435 video camera fitted with a very short nosepiece, a light pollution filter and a 0.5 focal reducer was used to obtain the following images with an, f/4.8, 10" Newtonian:

The Horsehead nebula

The Flame nebula

The Running Man nebula

A Trust 1.3 Mp webcam was put at the prime focus of a H-alpha PST to obtain this full disk image of the Sun.

A DMK21AS camera fitted with the lens assembly of a x2 Barlow was used with a H-alpha PST to obtain this image of AR1131 and AR1133:

The same camera setup was placed on a Ca K-line PST to obtain this image of AR1131 and AR1133

Steve Wainwright

Wednesday, December 8, 2010

 

Orion with a SDC-435 and a focally reduced 6", f/5 Newtonian

15 min Vobs were captured on DVD and BMPs were extracted. The BMPs were stacked in Registax dark frame corrected with scaled darkframes scaled in Andrew Sprott's Dark Frame Scaler. Click on an image to get a larger view:
M42/3


The Flame Nebula


The Horsehead Nebula


Steve Wainwright

Monday, December 6, 2010

 

Jupiter, Saturn and Venus

Using a DBK21AS camera and an 11" SCT, the three planets and some of Jupiter's moons were imaged:

Shortly after sunset on Dec 5th:
Jupiter with a 2x Barlow



Jupiter with a 1.5x Barlow

Shortly before dawn on Dec 6th:
Saturn with a 2.5x Barlow

Venus with a 1.5x Barlow
Keith Davies

 

Solar activity

H-alpha and Ca K-line PST solar telescopes were mounted on a Merlin Mount and a DMK21AS camera fitted with a x2 Barlow lens assembly were used to record solar activity today.

There were some magnificent Hedgerow prominences and a huge filament revealed in H-alpha light


Sunspots AR1131 and AR1133 were imaged in H-alpha light


and Ca K-line light


Steve Wainwright

 

Sunday's sunspots

A DMK31AS was used with a 120mm Skywatcher APO refractor
with a Baader solar filter.
Prime Focus


x3 Barlow


Keith Davies

Sunday, December 5, 2010

 

Sir Isaac Remembers. A one man play starring Prof Mike Edmunds

On Sunday December 12th, at 2-30pm in Swansea's National Waterfront Museum, Prof. Mike Edmunds of Cardiff University will present his famous one man Play 'Sir
Isaac Remembers':

Sir Isaac Newton is sorting out his letters during the last year of his life.
The dramatic reconstruction is based entirely on authentic letters and contemporary material.
Sir Isaac offers thoughts on his science, his lesser-known studies, and his life.
Remember: Sunday, December 12th, The National Waterfront Museum at 2-30pm, a family event.
FREE ENTRY


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