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Thursday, January 23, 2020

 

The Orion nebula with an SV305 camera and AstroDMx Capture for Linux

Stack combination of 30 x 25s, 30 x 20s, 30 x 15s, 30 x 10s, 30 x 5s and 30 x 2s exposures plus matching dark-frames, of The Orion nebula with an SV305 camera with an SVBONY UV/IR cut filter, and a 130mm, f/5 Newtonian, captured with AstroDMx Capture for Linux. Images stacked and combined in Deep Sky Stacker and processed in the Gimp, FastStone and Neat image.


Steve Wainwright and Nicola Mackin

Wednesday, January 22, 2020

 

The Fish-Head nebula IC1795

4x1200s H-alpha using an Altair Wave 102 telescope with a 0.79 focal reducer fitted and SXVR H694 camera on a Cem60ec mount. Software Sequence Generator Pro.
(IC1795) part of the Heart nebula (IC1805) complex.

Click on the image to get a closer view.

Fish-Head nebual

Anne Startup

Tuesday, January 21, 2020

 

Deep Sky sketches

I used a 150mm f/5 refractor and a Starlight Xpress Ultrastar camera as an electronic eyepiece.




Jim Startup

Saturday, January 18, 2020

 

Astronomical event at the National Waterfront Museum, Swansea, Saturday Jan 18th

Swansea, Barry, USK, Cardiff and Bridgend Astronomical societies put on a fine display at the Waterfront Museum.
Click on an image to get a closer view.










Photos: Alistair Vowles

Thursday, January 9, 2020

 

What's that planet doing there?

Happy New Year 2020 everyone!

In our first meeting of the new decade, Nik Whitehead of UWTSD gave us a talk on "What's that planet doing there? A brief introduction to planetary formation"


Nik told us some of the theories of planetary formation that have been favoured back in history, and how they changed over the years as more observations became available. Now, observations of exoplanets in other solar systems are informing our theories - Jupiter and Saturn would normally be much closer to the sun, for example, but they have gravitational resonance with each other that keeps them in their current orbitary positions.

Thank you very much Nik for coming to talk to us, and thank you for the demo using the soft toy planets (from http://www.celestialbuddies.com) Here is Nik with Jupiter and Saturn! :



Wednesday, January 8, 2020

 

Crater studies on the 55% waxing Moon

Celestron 9.25 SCT AVX, 2xTelevue Barlow, ZWO ASI120MM camera, 3 x 2000 images captured in Firecapture 2.5x64, 750 stacked and aligned in AutoStakkert!2.6, wavelets in Registax 6, then edited in Adobe Elements 11 and stitched in Microsoft Ice.

Click on the image to get a closer view

Ptolemaeus, Alphonsus, Arzachel

Colin Miles

Monday, January 6, 2020

 

22 pane mosaic of the terminator of the 55% waxing Moon

Lunar composite - from Challis down to the last 3 craters Miller, Nasireddin and Huggins.  55% waxing Moon.

Celestron 9.25 SCT AVX, 2xTelevue Barlow, ZWO ASI120MM camera, 22x2000 images captured in Firecapture 2.5x64, 650 stacked and aligned in AutoStakkert!2.6, wavelets in Registax 6, then edited in Adobe Elements 11 and the 22 images put together as a composite using Microsoft Ice.

It is essential to click on the image, and click again, to get closer views.


Colin Miles

Saturday, January 4, 2020

 

Lunar detail with an SV205 and AstroDMx capture for Linux

The SV205 is a challenging camera, but used correctly, can capture good lunar detail.
Here are two regions of the 55% waxing Moon.

Click on an image to get closer views

Screenshot of AstroDMx Capture for Linux gathering data from an SV205 and a Skymax 127 Maksutov

Montes Apenninus region

Click on image to get closer views

Alphonsus, Ptolomaeus, Arzachel region

Full details can be found here

Steve Wainwright and Nicola Mackin

Thursday, January 2, 2020

 

The Orion nebula with a low cost SVBONY SV305 camera, AstroDMx Capture and an f/4.5, 102mm ED refractor

The SVBONY SV305 is a very stable, low cost camera that is ideal for Deep Sky, and Solar system astrophotography.

´╗┐The SVBONY SV305 camera is now implemented in AstroDMx Capture for Linux. Nicola has released Version 0.66.1 of AstroDMx Capture for Linux as .deb; .rpm and manual installers. Which can be downloaded from https://www.linux-astro-imaging.uk/


A motor-focuser-adapted Bresser Messier AR 102xs f/4.5 ED refractor was mounted on a Celestron AVX GOTO mount and a SVBONY SV305 camera, fitted with a light-pollution filter, was placed at the prime focus. AstroDMx Capture for Linux, running on an Ubuntu Linux laptop was used to capture 12 bit data into 16 bit Tiff files at three exposures (5s x 20; 14s x 30; 40s x 10) with matching dark-frames. Each set of images was stacked in Registax 5.1 and the resulting images were themselves stacked in Registax and also combined in Andrew Sprott's Flexible Image Combine. The final result was post processed in Glimpse (a fork of the Gimp), Fitswork, FastStone and Neat Image.

Screenshot of AstroDMx Capture for Linux capturing data on the Orion nebula with the SV305


The Orion nebula captured by the SV305 with AstroDMx Capture for Linux


The data were captured in haste in a clear sky that according to the weather forecast, was supposed to be dense clouds. The clear patch lasted just long enough to gather the data using the equipment that was closest to hand. Further tests will be done with a Newtonian reflector.

Steve Wainwright and Nicola Mackin

Monday, December 30, 2019

 

Conjunction of the 12% waxing, crescent Moon and Venus, December 29th

A Panasonic Lumix DMC-FZ72 bridge camera mounted on a static tripod, was st to auto and was used to capture an image of the Moon/Venus conjunction of December 29th.

Click on the image to get a closer view.


Steve Wainwright
 

12% waxing, crescent Moon with AstroDMx Capture for Linux and an SVBONY SV205 camera

The SV205 is an 8 Mp, USB 3.0 camera with pixel vignetting. New firmware for the camera has enabled it to be recognised as a USB 3.0 device by Linux.  A motor-focuser-adapted Bresser Messier AR 102xs f/4.5 ED refractor was mounted on a Celestron AVX GOTO mount and the SV205 camera was placed at the prime focus. AstroDMx Capture for Linux, running on an Ubuntu Linux laptop, was set to map to greyscale and used to capture a 1000-frame SER file of the 12% waxing, crescent Moon in a twilight sky, with real-time flat-field correction to correct for the pixel vignetting. A capture frame-rate of about 13fps was maintained during the capture. The capture resolution was 3264 x 2448.

Click on an image to get a closer view

Screenshot of AstroDMx Capture for Linux capturing data from the SV205


The best 90% of the frames in the SER file were stacked in Autostakkert! 3.1, wavelet processed in Registax 5.1 and post processed in Glimpse (a fork of the Gimp).

12% waxing, crescent Moon


The SV205 is a challenging camera, but it was possible to obtain pleasing results using this fast refractor. In future, testing will be done with a Maksutov to test the high resolution capture, which is what this camera is really for. Mapping to greyscale reduces the file-size to 1/3 of the full-colour image, which facilitates capture rates. With the Moon, greyscale is frequently used for image capture.

Steve Wainwright and Nicola Mackin

Thursday, December 26, 2019

 

Solar cycle 25 begins with two small active regions, AR2753 and AR2754.

Solar cycle 25 begins with two small active regions, AR2753 and AR2754. Stack of Bridge camera images through a Baader solar filter reveals both of them barely visible, but they are just pores. However, they are at high latitudes and with reversed polarity relative to Cycle 24 sunspots. Images precisely cropped in Nicola's AstroCrop before stacking. The seeing was ver poor.

Click on an image to get a closer view.


With terrible seeing: Stack of images of, new Cycle 25 active region. Imaged with an SVBONY SV305 and AstroDMx Capture for Linux running on a laptop with the Chinese Linux OS, Deepin; using the newly implemented Mono 8 camera mode. The scope was a Skymax 127 Maksutov fitted with a visual, Baader solar filter.
Screenshot of AstroDMx Capture for Linux capturing the sunspot data

AR2753

Steve Wainwright and Nicola Mackin

Thursday, December 19, 2019

 

Details of the 94% waxing Moon with AstroDMx Capture for Linux

December 9th
Lunar details of the 94% waxing Moon. QHY5L-ll-M camera and a Skymax 127 Maksutov.
1280 x 960, 3500-frame SER files captured with AstroDMx Capture for Linux on a laptop running Ubuntu
Best 50% of the frames Stacked in Autostakkert! 3.1, Wavelet processed in Registax 5.1 and post processed in Glimpse (a fork of the Gimp)

Click on an image to get a closer view.

Copernicus and Kepler


Gassendi region


Sinus Iridum and Plato region 


Lunar details of the 94% waxing Moon. QHY5L-ll-M camera and a Skymax 127 Maksutov with a 2.5 x Barlow.
800 x 608, 5000-frame SER files captured with AstroDMx Capture for Linux on a laptop running Ubuntu
Best 30% of the frames Stacked in Autostakkert! 3.1, Wavelet processed in Registax 5.1 and post processed in Glimpse

Craters Herodotus, Aristarchus and Shroeter's Valley


Reiner Gamma lunar swirl and crater Reiner

Steve Wainwright and Nicola Mackin

Wednesday, December 4, 2019

 
54.6% waxing, Moon. Stack of 161 images.
A Panasonic Lumix DMC-FZ72 bridge camera mounted on a static tripod, was used to capture 179 images at 1/320s exposure and 60x optical zoom in bursts of three. The images were precisely cropped in Nicola's Astrocrop software.
The best 90% of the images were stacked in Autostakkert!3.1. The resulting image was wavelet processed in Registax 5.1 and post processed in Glimpse (a fork of the Gimp).

Click on the image to get a closer view.


Steve Wainwright

Monday, December 2, 2019

 

The Elephant trunk nebula

The data were captured over three nights.
Altair Wave 102 scope, SX H694 ccd camera. 16x600s each of Ha, Olll and Sll. I used my new iOptron CEM60ec mount. 1st night I used Maxim DL, 2nd and 3rd I switched to Sequence Generator Pro as it's easier to frame accurately.
False colour images were created as follows:

R: Ha,  G: Sll,  B: Olll

R: Sll, G: Ha, B: Olll (Hubble Palette)

R: Ha, G: Olll, B: Olll

R: Ha, G: Olll, B: Sll (Canada, France, Hawaii Palette)

Anne Startup

Sunday, December 1, 2019

 

Deep Sky Sketches

A 150mm refractor was used with a Starlight express Ultra star camera as an electronic eyepiece to make these sketches.

Click on an image to get a closer view.








Jim Startup

Saturday, November 30, 2019

 

10.6% waxing, crescent Moon and a wide-field image including venus

10.6% waxing, crescent Moon. Stack of 216 images.
A Panasonic Lumix DMC-FZ72 bridge camera mounted on a static tripod, was used to capture images at 1/160s exposure and 60x optical zoom: 118 at ISO 1600 and 98 at ISO 400; These were the best 90% of the captured images at each ISO setting. All of the images were precisely cropped for each ISO setting, in Nicola Mackin's AstroCrop software. The data were stacked (best 90%) separately in Autostakkert!3 and wavelet processed in Registax 5.1. The two resulting images were derotated and merged in Glimpse Image Editor (A fork of the Gimp).

Click on an image to get a closer view



Stack of a burst of 3 wide field images of the crescent Moon with Venus at the right of the image


Steve Wainwright

Sunday, November 17, 2019

 

Star party at the National Botanic Garden of Wales

On Saturday November 16th, the Swansea Astronomical Society held a star party at the National Botanic Garden of Wales.

Thanks in particular to Andrew, Alistair, Alison, Phil and Chris for everything they did.
Despite the weather 60 adults turned up plus quite a lot of children and a dozen or so scouts who were staying overnight in the Great Glasshouse.  Alison and Andrew kept everyone thoroughly entertained throughout the evening, especially the children, and Chris did a talk to a 'full house' and Paul entertained the scouts afterwards.  One youngster came along with his scope and Chris was able to get it working - not often that that happens.  Also there were a few expressions of interest in joining the society.

The next Star party at the Garden will be on Saturday Feb 22nd and we are hoping to use the refurbished Theatre, possibly with a planetarium inside.


Photos by Chris Bowden




Photos by Alistair Vowles

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