Swansea Astronomical Society Blog

Saturday, October 1, 2011

 

H-alpha solar images with the Swansea Astronomical society Solarmax 40 solar telescope

The Coronado Solarmax 40 H-alpha solar telescope was mounted on a well aligned driven HEQ5 mount set to solar rate tracking.
A DMK21AS camera fitted with a UV/IR cut filter was placed at the prime focus and an AVI of 10,000 frames was captured at 60fps. The AVI was registered and stacked in Registax 6, using the best 500 frames.
Click on an image to get a larger view.

AR1302 can be seen on the right with AR1305 in the middle. Other smaller active regions were also visible. The disk is seething with magnetic activity.

The lens assembly from a x2 Barlow was attached and a larger image of AR1302 and AR1305 was obtained. As before, the best 500 out of 10,000 frames were registered and stacked in Registax 6.


Gaynor controlling the mount and camera, and capturing the AVIs:


About 3 hours before we captured these images AR1302 and AR1305 erupted in close succession revealing a long distance entanglement.

Gaynor Thomas and Steve Wainwright
 

A wireless PA system for the Swansea Astronomical Society

Gaynor Thomas sourced a wireless PA system which we tested today.
It passed with flying colours.


Gaynor demonstrates the amplifier and the wireless lapel/shirt microphone.

This will drastically improve the acoustics of the lecture room without interfering with campus systems.
Members who are hard of hearing will be able to have a better chance of hearing the speakers.

Friday, September 30, 2011

 

AR1302 in white light

The leading component of AR1302 has completed its split into two distinct spots. A DMK21AS camera fitted with the lens assembly from a x2 Barlow and a UV/IR cut filter was used with a 5" Maksutov fitted with a photographic grade Baader solar filter. A single AVI of 10000 frames was processed with Registax 6 for each part of the AR. The two parts were merged with iMerge. Lots of granulation and spot structure is visible.
Click on an image to get a larger view.




Steve Wainwright
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More images by Derek Francis







Derek Francis

Thursday, September 29, 2011

 

Sunspots today

Exactly the same setup was used as yesterday and the same sunspots are presented in the same order. An 11" SCT fitted with a Baader solar filter was used.
AR1306 on the left and AR1305 on the right. Focal length 2800mm.


AR1302


The next two images of AR1302 used a 1.6x Barlow. Focal length 4480mm.


Granulation and the fibrillar structure of the penumbra is clearly visible.


Derek Francis
 

Solar activity on Sept 28th and an evening Jupiter, Uranus and a Bubble

These images were taken at a focal length of approximately 2800 mm with
an 11" Celestron fitted with a Baader solar film type filter.
AR1306 on the left and AR1305 on the right


AR1302


The two parts of AR 1302 and were taken at a focal length of
approximately 4480 mm using a 1.6 Barlow.




Derek Francis
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More images by Steve Wainwright

Images are colourised to indicate the wavelengths used
AR1302 taken with a DMK21AS camera fitted with an IR/UV cut filter and the lens assembly of a x2 Barlow, with a 5" Maksutov fitted with a photographic grade Baader solar filter


H-alpha mosaic showing details of AR1302 in context. A H-alpha PST was used with the same camera arrangement as for white light


Whole disk imaged with a modified Opticstar PL-130M camera fitted with a ND filter and an IR/UV cut filter at the prime focus at the PST. GSTAR4 software was used to control the camera and capture the AVIs:


In the evening a Samsung SDC-435 frame-accumulating video camera fitted with a light pollution filter was fitted at the prime focus of an f/5, 6" Newtonian. A Kmax USB video capture card was used and GSTAR4 was used to capture unique frames into AVIs. Dark frames were collected and Andrew Sprott's Dark Frame Scaler was used to scale the master dark frame before it was used in Registax.
The Bubble nebula C11


Steve Wainwright
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More images by Keith Davies

The images were all taken through a 11” Celestron SCT and a DBK21 camera

Jupiter at prime focus.




Uranus with a 1.5x Barlow


Keith Davies

Wednesday, September 28, 2011

 

Solar activity on Sept 27 in H-alpha and white light and an evening Jupiter

A modified Opticstar PL-130M 1.3Mp CMOS camera was placed at the prime focus of a H-alpha PST to image the whole disk. New GSTAR4 software by Australian astronomers Steve Massey and Chris Wakeman was used to control the camera and capture AVIs. A DMK21AS camera fitted with a Baader green continuum filter and an IR/UV cut filter was placed at the prime focus of a 5" Maksutov fitted with a Baader photographic grade solar filter and AR1302 was imaged. The same active region was also imaged with the DMK fitted with the lens assembly from a x2 Barlow with the H-alpha PST. The whole disk and the active regions were seething with activity.
Images were colourised to represent the wavelength used.

Click on the image to get a larger view.

Detail of AR1302 using the DMK camera


AR13012 in Green continuum light


Steve Wainwright
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More images by Keith Davies








Keith Davies

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