IC5146 - The Cocoon Nebula

IC5146 - The Cocoon Nebula (also referred to as Caldwell 19 or Sh2-125). It is a reflection/emission nebula in the constellation Cygnus. IC5146 is the cluster of 9.5 mag stars in the nebula. which shines at magnitude +10.0. The cluster is about 4,000 light years away, and the central star that lights it was formed about 100,000 years ago. The nebula is about 15 light years in diameter. When viewing IC 5146, dark nebula Barnard 168 (B168) forms a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon.


A total of 38x300 sec Lights, with Darks, Flats and Bias. Processed in PixInsight and Photoshop.


Taken with an Altair Astro GP cam featuring a cast of thousands but notably Bill, Gary, Debbie, Janet and of course yours truly. Glynn observed and nobody made the tea??

Jim Plimmer


A 3-panel mosaic of the constellation of Orion taken with an unmodified Canon 1000D, using the stock 18-55mm zoom lense, on a SW Star Adventurer mount. You can see the Orion Nebula in the sword, the Running Man Nebula just above it and, if you look closely, the Flame Nebula just to the left of Alnitak (the leftmost belt star).
A total of 90x180sec Lights, with Darks.

NGC2237 - Rosette Nebula in Monoceros

The Rosette Nebula (also known as Caldwell 49) is a large, circular H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) within the centre of the nebula is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter.
A 2-panel mosaic. Each panel made from 16x300sec Light, plus Darks, Flats and Bias frames.


NGC6883 & NGC6871

A double cluster in Cygnus. The cluster stars are not very well detached from the background sky owing to the fact that they are in a very rich section of Cygnus and also embedded within the eastern end of the nebulosity associated with LBN 182.

7x300sec Subs, with Darks, Flats and Bias



This is the constellation of Cassiopeia using a Canon 1000D and the standard 18-55mm lens that comes with it. The zoom was set on the max of 55mm.

40x120sec Subs, plus Darks, Flats and Bias



Taken with an ODK12 on 6.7.15. The camera was a Canon 550D at ISO800. 15 x 60sec was the exposure, all sigma-average stacked in Astroart. No guiding, no flats, no darks and no IDAS filter used. A lucky shot considering how close it was to the southern horizon. Just 11° above it among trees.
Pluto looks quite small, but then it would from here on Earth, whereas those Americans used a spacecraft to get their close-ups. Final processing in Photoshop.


Taken on the 6th of July 2015, during a collimation session. The telescope was an Orion Optics ODK12 and the camera a Canon 550D. The exposure was 20 frames of 60sec each, at ISO800, no guiding, no flats, no darks and not with my usual IDAS filter. It was just to see the effect on photography that collimation by eye had. The frames were stacked in Astroart as 4 groups of 5 frames sigma-added, and the resultant 4 frames were averaged. Final processing was done in Photoshop. It needs more time to make a reasonable photograph but it was done as a test of detail, so look at the number of stars in the body of the nebula particularly the one next to the White Dwarf.

Impromptu AstroMeet 26th February 2015

These images were taken at an impromptu imaging/observing session on the WYAS observatory pad on 26th February 2015. The Jupiter image is a 1800 frame movie processed in Registax and the Moon image is a mosaic of 20 panels, each a 500 frame movie, again processed in Registax.

Caldwell 13 Owl Cluster and M82 Cigar Galaxy.

Both of these images were taken from my back garden in Castleford on the 28th October 2014. They are both made up of around 45 60 second exposures (ISO 1600) stacked in Deep Sky Stacker with 30 darks and 30 bias frames. Then processed in photoshop. I used a Canon 1200d SLR mounted on a Skywatcher 200PDS with a HEQ5Pro.

The Sun in Hydrogen-Alpha

Taken using the WYAS Tele-Vue Pronto with Coronado Solar Filters. A 4-Panel mosaic with each panel captured with a QHY5L-II Colour planetary camera running at 30fps @ 1280x960 resolution. Captured in raw SER mode, converted to AVI using PIPP, stacked and wavelet processed in Registax, then assembled in Photoshop.


Mars at Opposition

An image of Mars at Opposition, taken from the observatory pad on 15th April 2014. Stacked and processed in Registax6, then colour balanced in PixInsight. Taken with a Celestron 5se scope and a QHY5L-II camera, with a Celestron 2x Barlow.



A widefield image of Jupiter and its moons (L to R: Callisto, Io, JUPITER, Europa and Ganymede) taken from the observatory pad. Stacked and processed in Registax6, then colour balanced in PixInsight.

A closeup view of Jupiter and Io.

Both images taken with a Celestron 5se scope and a QHY5L-II camera. A Celestron 2x Barlow was used for the closeup image.


WYAS Moon Astrophotography Challenge 15th April 2014

As a one off challenge, we set a competition for one night to photgraph the full moon. 

This Full moon image was taken with a DSLR using an 8” SCT telescope. The image is a composite of 2 moon halves, each half being a high definition image made up of a stack of 30 DSLR images taken with 1/60th second exposure at ISO 640 with a Canon 40D.  The two halves were then merged in Photoshop.

Moon 13th March 2014

This image of the Moon taken on Wednesday 13th March 2014 is a mosaic composite image. Taken using a Celestron 8" SCT and a DMK 21AU04 CCD Mono Image camera.

This composite image consists of 74 video .avi files, each of 1000 frames approx. 16 seconds in length. Each video file is processed using RegiStax to create a single .tif image. These single tif images are then assembled in Adobe Photoshop to create the final overall Moon image. 

National Astronomy Week Event 4th March 2014

WYAS held a special opening at the Rosse observatory on March 4th as part of National Astronomy Week.
The theme was “Jupiter and its moons” The event was well attended by the public and club members. We had our 14” SCT in the dome operational, plus our 18”, 10”, 8” scopes and reverse binoculars all in use by the public.
We setup astrophotography on the 8” SCT and took these images during the night of Jupiter with a Phillips SPC800 web cam and Orion using a DSLR with a 40sec exposure at ISO3200.

This is my attempt at imaging the supernova in M82 on the 23rd January 2014. The image was taken through a Televue 102 on a Celestron CGEM mount guided via a Lodestar guider through a separate refractor. 1.25-inch Baader filters were used in an Atik filter wheel. The main camera was an Atik 314L+ controlled through MaximDL. Some images lost to satellites and planes, so 20 mins green, 15 mins blue, 35 mins Luminance and 50 mins hydrogen alpha 35nm. Calibrated and stacked in MaximDL. Final processing done in Photoshop CS6.
This is my first attempt at the Horsehead Nebula in Orion on the 19/1/2014. 15 x 5 minute exposures in Luminance only filter. Telescope was 102mm Televue refractor using an Atik 314L camera cooled to -20C. Guided by a Lodestar guider. Seeing very steady with a hint of mist forming - very icy on the ground.

Messier 33 - Triangulum Galaxy

The Triangulum Galaxy is a spiral galaxy approximately 3 million light years from Earth in the constellation Triangulum. The Triangulum Galaxy is the third-largest member of our Local Group of galaxies, which includes the Milky Way, the Andromeda Galaxy and about 44 other smaller galaxies. It is one of the most distant permanent objects that can be viewed with the naked eye.

36x300sec Subs, Darks, Flats and Bias

NGC7023 - The Iris Nebula

The Iris Nebula (also known as Caldwell 4) is a bright reflection nebula in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, with the nebula lit by a magnitude +7 star (SAO 19158) within the cluster. The nubula lies 1,300 light-years away and is approximately six light-years across.

82x300sec Subs, Darks, Flats and Bias

The North America & Pelican Nebulae

The North America Nebula (NGC 7000) and the nearby Pelican Nebula (IC 5070) are parts of the same interstellar cloud of ionized hydrogen in the constellation Cygnus. The shape of NGC7000 resembles that of the continent of North America, complete with a prominent Gulf of Mexico and the Cygnus's Wall is the term used to describe the Mexico and Central America part of the nebula; this area being the most concentrated star formations area of the whole nebula.
These nebulae are large, covering an area of more than six times the size of the full moon, and it is estimated to be about 1800 light years distance and around 100 light years across. This image is a 3-Panel mosaic covering an area approximately 3° x 2°

A 3-panel mosaic.
Each Panel: 16x300sec Subs, Darks, Flats and Bias.

Other images from the WYAS 40th Event 23rd November 2013

As part of the open day we had Rocket Launching at the Grange.

Some even get in to orbit !!

and the Planetarium was well supported with programs covering, the Solar System, Galaxy Fly Through and the Space Shuttle / Space Station.

Sun Spots..... WYAS 40th Event 23rd November 2013

Never look at the Sun through any Lens based device.  Telescope, Camera, Binoculars, WHY !
Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late.  Children should always have adult supervision while observing the sun.  Using special telescopes and filters that remove 99.999% of the harmful light you can observe and image the sun.
This image is a stack of 20 DSLR RAW images, taken using the WYAS Meade 10" SCT telescope with a Thousand Oaks Solar Filter and a Conon 40D. The core images were taken at 1/200 sec @ ISO 400, then stacked in RegiStax 6

Comet ISON Tuesday 19th November 2013

Comet ISON, also known  as C/2012 S1 is a sungrazing comet discovered on 21 September 2012 by Vitali Nevski, and Artyom Novichonok.  Comet ISON’s nucleus is around 5 kilometers (3.1 miles) in diameter. Comet ISON  orbit will come to perihelion (closest approach to the Sun) on 28 November 2013 at a distance of 1,860,000 km; or 1,150,000 miles from the center point of the Sun. Its trajectory appears to be hyperbolic, which suggests that it is a dynamically new comet coming freshly from the Oort Cloud. On its closest approach, Comet ISON will pass about 64,210,000 km; 39,900,000 miles from Earth on 26 December 2013.

Comet ISON/2012 S1 is expected to be brightest around the time it is closest to the Sun; however, it may be less than 1° from the Sun at its closest, making it difficult to see against the Sun's glare. In December, Comet ISON  will be growing dimmer, but, assuming that it remains intact, it will be visible from both hemispheres of Earth, possibly with a long tail. Comet ISON  will be well placed for observers in the northern hemisphere during mid to late December 2013.  After perihelion, it will move north on the celestial sphere, passing within two degrees of Polaris on 8 January.

Half Moon 10th November 2013

This image of the Moon taken on Sunday 10th November 2013 is a mosaic composite image created using HD video images. Taken using a Celestron 8" SCT and a DMK 21AU04 CCD Mono Image camera.

As the imaging sensor on the DMK camera is small, you can only image a small amount of the moon's surface. You take multiple videos of the small area that you can see and create a series of  video files that cover the overall moon's surface. This mosaic of video image files can then be processed and assembled to create the final overall image.

This image consists of 65 video .avi files, each of 2500 frames approx. 40 seconds in length. Each video file is processed using RegiStax to create a single .tif image. These single mosaic images are then assembled in Adobe Photoshop to create the final overall Half Moon image. The effect is a clearer image than that taken by a single DSLR image covering the full DSLR frame.  Open the image and zoom in and to see the depth of the some craters and features on the moon's surface.