Swansea Astronomical Society Blog

Friday, May 24, 2013

 

The full Moon and a Jupiter, Venus, Mercury conjunction

In the eastern sky a full Moon was rising and was captured with a tripod mounted Pentax K-x DSLR set to ISO 100, f/8, 1/500s exposure and F=300mm. Click on an image to get a larger view:



In the western sky at the same time the conjunction of Jupiter (top, left), Venus (bottom, middle) and Mercury (top, right) was low in the sky over Llanrhidian salt marsh and the Loughor estuary. The tripod mounted camera was set to ISO 100, f/8, 1s exposure and F=120mm:


Steve Wainwright

A tripod mounted Nikon D5100 DSLR was used to capture images of the conjunction:


Nicola Mackin


Thursday, May 23, 2013

 

The Sun with a Lunt H-alpha scope

A DMK21AS camera was placed at the prime focus of a Lunt LS60THa-B1200C scope. A region with two prominences was imaged with an exposure for the prominences. A 5000 frame AVI was captured. The same region was also imaged, exposed for the prominences. The two images were combined to produce the final image:


AR 1756 and 1754 were imaged with the same camera but a 2.5x barlow:

An Opticsta PL-130M monochrome CMOS camera, fitted with a ND filter was placed at the prime focus of the telescope and an AGI was captured. Registax processed the data to produce the final image:


Derek Francis and Steve Wainwright

Monday, May 20, 2013

 

67% Waxing, gibbous Moon

Last night an Opticstar Pl-130M monochrome, CMOS camera, set to 640 x 480 mode was placed at the prime focus of an f/10, 127mm Maksutov and seven overlapping areas of the Moon were captured as AVIs. The AVIs were stacked in registax with only slight adjustment of the top wavelet slider, and the resulting images combined in Microsoft ICE. Click on the image to get a larger view:



High resolution detail in the terminator.
4 overlapping 6 min AVIs were captured at 8 fps and Processed in Registax, on average, using the best 1500 frames from each AVI. Thr resulting images were combined in Microsoft ICE. Click on the image to get a much larger view:



Steve Wainwright
 

The Moon with a Philips SPC900 webcam

A Philips SPC900NC camera was used with an f/10, 6" SCT to mosaic the Moon with overlapping AVIs. The AVIs were stacked in Registax and combined in Microsoft ICE:


Colin Miles

Sunday, May 19, 2013

 

The Sun in different parts of the spectrum and a transit

An Opticstar PL-130M monochrome CMOS camera was used with three different scopes today to image the Sun at Prime focus. Whilst imaging in H-alpha with a Solarmnax ll 60 BF 15, an interesting transit took place at about 11-56am:


The transit took about 5 seconds to complete.

The PL-130M was fitted with a ND filter plus a Schuler IR pass filter and the Sun was imaged in IR light at wavelengths above 850nm. In all cases, 6min AVIs were captured:

The Sun in IR


The Sun was then imaged in H-alpha light using a Solarmax ll 60 BF15, H-alpha scope. Two AVIs were captured, one exposed for the disk and the other exposed to show the prominences. The two images were combined:
H-alpha light

The Sun was imaged in Ca K-line light using a CaK PST solar scope:

Ca K-line light

The two images were then blended to produce an image showing all the structures that are revealed in both H-alpha and Ca K-line light

H-alpha + Ca K-line light


Steve Wainwright




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