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GordonH

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Everything posted by GordonH

  1. Hi This has taken a while to do because of the current storm system that has been affecting the UK. It was taken over 5 nights over the last six weeks or so and consists of 24x10 minutes Ha, 18x10 minutes OIII and 24x10 minutes SII taken with the Televue NP127is/FLI imaging system that I've been testing. The SII and half of the OIII was taken under far from ideal conditions with a three quarter moon close by and some thin mist towards the end of the session. The system is mounted on my Paramount ME with auto guiding taken care of by an Officine Stellare Falco guide scope and Starlight Xpress lodestar with dithering. I have had a few goes at this in the past in both Ha and colour, these can be seen on my website http://www.imagingtheheavens.co.uk The full size version of this image can be seen at the following link http://ic2.pbase.com/o9/29/869929/1/154102554.MlqJGYXe.RosetteHSTmax.jpg Thanks for looking Best wishes Gordon
  2. Hi I took this in November but have only got round to processing it, it was taken with the Televue NP127is/FLI system that I am testing on a Paramount ME. This is 24x10 minutes Luminanace and 12x10 minutes each for RGB. It was taken over 4 nights. The full size version is at the following link http://ic2.pbase.com/o9/29/869929/1/153537313.gVmAAJpH.M45.jpg Thanks for looking Best wishes Gordon
  3. I think there possibly is Paul, but having not seen many full tri-colour narrow band images of this subject it is difficult to say whether it is or a result of the extensive stretching required to get the three channels to show Best wishes Gordon
  4. Hi This subject is very rarely imaged in the full narrow band palette as there is virtually no OIII and little SII compared to the Ha. It is more common to image it in LRGB or HaLRGB combined. I have done the latter but I wanted to see if there was anything that could be done with just the traditional narrow band filters. The OIII signal is so weak that it has to be stretched just to be able to see it. But, it is there, it just requires enough data and time and patience to tease it out. This is a total of almost 15 hours exposure time with 4.5 hours Ha and 5 hours each of OIII and SII and it has taken me three goes at processing before I was happy with the result. It was taken with the Televue NP127is/FLI-Atlas-Centreline-PL16803 prototype imaging system that I am testing. This is a crop of the full image to show the detail better and make the image size easier to post. The full size image can be seen at the following link http://ic2.pbase.com/o9/29/869929/1/153652630.jYIpN54Q.ghostHSTmax.jpg Thanks for looking Best wishes Gordon
  5. Hi I have had a few opportunities to get some imaging done over the last month and have captured three images all in the HST palette. The first is of Ced214/NGC7822, the second is of Sh2-157 and neighbours and the third is of IC405/410. All were taken with the Televue NP127is/FLI Atlas-CentreLine-PL16803 prototype system that I am testing on a Paramount ME with an Officine Stellare Falco/lodestar guiding combination. Exposure times varied between 10 and 14 hours per image. The full size versions can be seen at the following links Ced214/NGC7822 http://m5.i.pbase.com/o9/29/869929/1/152047405.jTJpvknY.Ced214HSTfinal.jpg Sh2-157 http://m0.i.pbase.com/o9/29/869929/1/153152500.KDR3RG24.Sh2157HSTfinal.jpg IC405/410 http://m7.i.pbase.com/o9/29/869929/1/153363457.eVrtVYgG.IC405HSTmax.jpg Thanks for looking Best wishes Gordon
  6. Hi I wasn't totally happy with the combine of Ha with my LRGB image of this subject as the colour was a bit washed out and some of the detail especially in M110 was lost so I had a rethink and used a different method to combine the Ha in order to keep the original colour and detail. Also as a friend of mine suggested I combined some Ha with the blue channel so that the resulting Ha mix mimics the Hb as well as the Ha hence the magenta colouring of the star forming regions. It isn't so easy to see these regions on such a small image so I've provided a link to the full size image below http://ic2.pbase.com/o9/29/869929/1/152441197.pSroUIse.M31LRGBfinalHab.jpg Thanks for looking Best wishes Gordon
  7. Hi Following some comments from other people I decide to shoot some Ha data on this subject to combine with the LRGB data already obtained to help show up the star forming regions better within the galaxy. I shot 24x10 minutes of Ha to go with the 26x10 minutes Luminance, 12x10 minutes Red, 11x10 minutes Blue and 8x10 minutes Green. I blended the Ha with the Red channel before colour combining. This took a few attempts to get the balance as I wanted it but I eventually got to the results that I was looking for. The overall colour balance appears different to the LRGB image, this may be due to the Ha mix, I am unsure whether this is the case as this is the first time I have attempted this properly. The data was taken with the Tele Vue NP127/FLI(Atlas-Centreline-PL16803) which I am testing at the moment on a Paramount ME with an Officine Stellare Falco guidescope and SX Lodestar using dithering. There is a bit of differential flexure between my imaging scope and guide scope (probably due to the way things are set up) Here is a link to the full size image http://ic2.pbase.com/o9/29/869929/1/152377038.sq7B5jAd.M31LHaRGBfinal.jpg Thanks for looking Best wishes Gordon
  8. Looks like I will be adding some Ha to this on Saturday night if the weather stays clear
  9. Hi As the moon wasn't present I thought I'd have a go at some LRGB and I was able to complete M31 in three nights with some cloud interruption in between. M31 just about clears the roof of my house so I am able to image it as soon as it gets dark. This was taken with the Televue/FLI prototype imaging system that I am testing at the moment which consists of a NP127is (without the mechanical manual focuser), a custom built spacer tube with built in adjustable tilt and focusable field flattener, this is attached via zero tilt adapters to an Atlas focuser, Centerline filter wheel and Pl16803 camera. (details on the system can be seen on my previous post of the veil nebula). Exposure times were 26x10 minutes Luminance 12x10 minutes Red 8x10 minutes Green 11x10 minutes Blue Auto guiding was by a Officina Stellare Falco guide scope and SX Lodestar with dithering. The system is proving to be very easy to use and the focus is very stable with only one adjustment necessary during the night. Due to light pollution there were varying gradients on the different master frames so I dealt with the gradients before colour combining. I am particularly pleased with the result as I've managed to pull some detail out of the dust lanes in M110 which can be seen better in the full size version at the following link http://ic2.pbase.com/o9/29/869929/1/152178687.rUPLmrzo.M31LRGBfinal.jpg Depending on time and weather I may add some Ha to this but I have heard varying tales as to whether it is worth it with this subject. When I've a bit more time I will post some pictures of the system on my website Thanks for looking Best wishes Gordon
  10. Yes, sorry about the font and colour, I copied and pasted and this is what came up and I couldn't alter it
  11. Veil Nebula in HST palette (First light with prototype Tele Vue NP127/FLI imaging system) A few months ago David Nagler from Tele Vue and Greg Terrance from FLI spoke to me about a very interesting collaboration between them to produce a complete imaging system i.e. telescope (a specially designed and customised spacer tube in place of the stock mechanical focuser), an accurate and stable electronic focuser, filter wheel and camera. David asked me if I would like to beta test the system for them over the next few months, well, I jumped at the chance. The system consists of an NP127is tube assembly and in David’s own words “We have taken our NP127is tube assembly and fitted a properly dimensioned, solid spacer tube in place of the standard focuser body. The length of the spacer tube is designed to put the FLI Atlas focuser at the centre of its travel. Incorporated into this tube is a focusable Large Field Corrector lens that is otherwise used when the standard NP127is is paired with a 16803 sensor. In addition, we’ve incorporated our unique image plane tilt correction from the standard Imaging System focuser. The scope came pre-focused and adjusted from Tele Vue. The idea is that imaging train will be as close to perfectly set up as possible right out of the box, but still allow some tweaking if necessary for FLI products already in customers’ hands. So this instrument is far more than just unscrewing the focuser of an NP127is and adding an extension tube!” To the back of this is attached the FLI Atlas focuser, the Centre line filter wheel and a Proline 16803 CCD camera all using the FLI ZTA (Zero Tilt Adapters). As I already had the focuser and camera David and Greg Terrance from FLI shipped over the telescope and filter wheel with all the necessary adapters. Setting up was very straight forward and the time it took me to dismantle my imaging set up and swap filters over, change front plate on my camera, put everything on my mount including a guide scope and rebalance the system was about 3 hours, no extra tools were required as they are standard allen key fittings. The ZTA system is about the most secure system I’ve used in connecting components together and it such a secure fit that it is like welding the components together without using a torch! Although David mentioned above that there is some tweaking available to the end user I didn’t find this necessary so the first light image is produced from the system as it arrived. From my perspective and first use it is truly “plug and play”. I will be using this system over the next few months so I will post my progress as it happens. The sensor chip of the Proline 16803 is square with 4096x4096 9micron pixels with a diagonal of 52.1mm. My PL16803 that I am using has Anti Dew Technology fitted and has no cover slip on the chip. I am using 2” square filters in the Centreline filter wheel, the narrow band filters are all 5nm bandwidth. The camera is cooled to -35c and it manages to hold this temperature with ease even during warm summer nights The image was taken over three nights and as the weather hasn’t been too good and after 2 false starts due to cloud I was keen to get some early results so I shot 10 minute sub frames with 13x10 minutes for Ha, 17x10 minutes for OIII and 23x10 minutes for SII. As I changed scopes I had to shoot all my flats again which was fairly straight forward. I am using an Officine Stellare Falco guide scope and Starlight Xpress Lodestar for guiding, with 5 second guiding exposures with dithering switched on. I last shot this 3 years ago with a different camera/scope combination, this can be seen on my website http://www.imagingtheheavens.co.uk for comparison A full size version is at the following link http://www.pbase.com...820147/original Thanks for looking Best wishes Gordon
  12. Hi The good weather continued for a bit and I was able to get three nights to tackle this colourful object. It was taken with the FSQ106ED at f5, FLI PL16803 on a Paramount ME. Exposures are 8x30 minutes Ha, 7x30 minutes OIII and 5x30 minutes SII (cloud interrupted the last evening). The OIII and SII are quite weak here and had to be stretched more than the Ha. I could have done with more sub frames but I am pleased with the overall result. I tried this 3 years ago with a Starlight H36 and this can be seen for comparison on my website http://www.imagingtheheavens.co.uk There is a larger version of this at the following link http://www.pbase.com/imaging_the_heavens/image/151451650/original Thanks for looking Clear skies and best wishes Gordon
  13. Hi I have recently got myself an FLI Proline 16803 camera and this is first light on IC1318 which I took over three nights, it is 6x30 minutes Ha, 5x30 minutes OIII and 7x30 minutes SII. The first thing that impressed me about the camera (apart from the ability to maintain set point temperature of -35c indoors in a warm room for over 20 hours taking dark frames) was how clean the sub frames appeared when downloaded, I was expecting to need 6 nights to finish this image because of keeping noise levels down but even with the shortish integration time there is little or no noise apparent (no noise reduction used). I have put a larger version at the following link. I have done this area previously with a Starlight Xpress H36, this can be seen at my website http://www.imagingtheheavens.co.uk for comparison http://www.pbase.com/imaging_the_heavens/image/151294396/original Thanks for looking Best wishes Gordon
  14. Hi Carrying on with the RGB targets until the narrow band season comes round again, I shot this over three nights starting last week, it was taken with the FSQ106ED and ML 8300 on a Paramount ME and is 18x10 minutes Luminance and 13x10 minutes each for RGB. The full size image can be seen at the following link http://www.pbase.com/imaging_the_heavens/image/150713514/original It could do with more data to iron out the noise but I have to be grateful for any clear skies Thanks for looking Best wishes Gordon
  15. Hi While I am waiting for narrow band targets to come round again I occasionally like to try a bit of RGB when the moon is not there and the weather plays ball. This is of M63 which was taken over three nights and comprises of 24x10 minutes of Luminance and 15x10 minutes each of RGB. This is a crop of the full size image which can be seen at the following link http://www.pbase.com/imaging_the_heavens/image/149971980/original It was taken with the FSQ106ED and ML8300 on a Paramount ME Thanks for looking Best wishes Gordon
  16. Hi With all the bad weather imaging has been a luxury over the last few months and then 3 clear nights in a row crop up and I was off duty, as the moon wasn't about I thought I would have a go at the Leo Triplet. It was taken over three nights with 30x10 minutes Luminance, 19x10 minutes Red, 14x10 minutes Green and 12x10 minutes Blue. It was taken with the FSQ106ED at f5 on a Paramount ME with a FLI Microline 8300, auto guiding was by a Lodestar and OAG using dithering. Light pollution was a bit of a problem as I had to shoot directly over our neighbours roof and their bedroom light was on frequently so Gradient Xterminator earned its keep in the processing. This a crop of the full field of view image which can be seen at the following link http://www.pbase.com/imaging_the_heavens/image/149535753/original I have only ever tried the triplet one before when I first started imaging, this "effort" can be seen in the image gallery on my website http://www.imagingtheheavens.co.uk for comparison (what a difference a few years and practice makes!) Thanks for looking Best wishes Gordon
  17. Hi I have finally finished my IC1795 image in the HST palette that I started in early December last year, due to a combination of consistently bad weather and the one clear night coinciding with work I haven't been able to do any imaging for over two months. This was taken with the FSQ106ED at f5 on a Paramount ME auto guided with a Lodestar and OAG, exposures were 25x30 minutes Ha, 15x30 minutes OIII and 8x30 minutes SII with a FLI ML8300 and 5nm narrow band filters. Fog came in just after I finished the 8th SII frame last night and it would benefit from a bit more SII data but I am grateful for some imaging time at least. The Ha data can be seen on my website at http://www.imagingtheheavens.co.uk and there is a full size version of this at the following link http://www.pbase.com/imaging_the_heavens/image/148877398/original Thanks for looking Best wishes Gordon
  18. I will be there both days helping out on the Widescreen stand, come over and say hello Best wishes Gordon
  19. Hi This is the first stage of a full colour NB image of this 'ghostly' looking nebula in Cassiopeia. I had a clear night and because the constellation is circumpolar I was able to get 12.5 hours of data in one night ( a first for me), the only interruptions during the night were one for a focus check and one for the meridian flip. This was taken with the FSQ106ED at f5 on a Paramount ME and a FLI ML8300. Exposures are 25x30 minutes with a 5nm Ha filter, auto guiding was by a lodestar and OAG using dithering. Processing was as follows Calibrated with Darks and flats + darks Registered with Registar Stacked in Maxim DL using sigma clip Stretched using gamma stretch with value of 0.1 and saved to 16 bit tiff Levels and curves in CS5 I'm just waiting for the weather to clear again so that I can shoot the other two channels. A full size version is available at the following link http://www.pbase.com...921975/original Thanks for looking Best wishes Gordon
  20. Hi The weather has again been a pain so this is another image which ahs taken several weeks to complete, it is of IC1848 (soul or foetus nebula) using the HST palette so SII:Ha:OIII = R:G:B. It was taken with a FSQ106ED at f5 and FLI ML8300 on a Paramount ME. Exposure details are as follows SII 20x30 minutes Ha 13x30 minutes OIII 5x30 minutes All sub frames were calibrated in Maxim DL5, images registered with Registar, stacking and pre-stretching to 16 bit tiff in Maxim DL5 and then colour combined and processed in Photoshop CS5. Processing consisted of levels, curves, contrast adjustments and selective colour I first tried this over 4 years ago and that attempt can be seen on my website http://www.imagingtheheavens.co.uk for comparison. There is a full size version of this at the following link http://www.pbase.com/imaging_the_heavens/image/147738479/original Thanks for looking Best wishes Gordon
  21. Hi This image has taken over a month to complete with a couple of false starts during that time (set up, framed, focused, auto guider running and then clouds appear). I shot the SII data on November 5th with fireworks going off for the first few hours, thankfully they don't emit light in the SII 5nm bandwidth. This was taken with the Takahashi FSQ106ED at f5, FLI ML8300 on a Paramount ME, auto guided by a SX lodestar and OAG using dithering. Processing was curves/levels, contrast and selective colour. Exposure details are 19x30 minutes SII, 10x30 minutes Ha and 14x30 minutes OIII combined so SII:Ha:OIII = R:G:B I tried this subject a few years ago with a TMB115/SX H36 combination, this can be seen on my website http://www.imagingtheheavens.co.uk for comparison There is a full size version of this at the following link http://www.pbase.com...204744/original Thanks for looking Best wishes Gordon
  22. Hi I managed to get out to add some more OIII data to this, I was hoping to get some more SII as well but the weather has turned again. This is now 8x30 minutes SII, 12x30 minutes Ha and 19x30 minutes OIII. I have also reprocessed it from the ground up to produce a more pleasing image (less greens). Hope you like it, will try and get some more SII in the next couple of weeks. The previous version can be seen on my website http://www.imagingtheheavens.co.uk A full size version can be seen at the following link http://www.pbase.com/imaging_the_heavens/image/146235154/original Thanks for looking Best wishes Gordon
  23. Hi This is of Sh2-155 (Cave Nebula) in the wavelength ordered palette (HST) and was taken with a FSQ106ED at f5 on a Paramount ME, the camera was a FLI ML8300 with exposures of 8x30 minutes SII, 12x30 minutes Ha and 10x30 minutes OIII. The Ha version can be seen on the home page of my website http://www.imagingtheheavens.co.uk There is a full size version at the following link http://www.pbase.com/imaging_the_heavens/image/146143339/original There are a lot of interesting subjects in the Sharpless catalogue so I may continue looking through them Thanks for looking Best wishes Gordon
  24. Hi Andy Thanks for the comments everyone, they are much appreciated, it was quite surreal as the sky was perfectly clear from horizon to horizon as the 9th sub frame downloaded and within the space of five minutes you could visibly see the fog moving from the horizon up to the top of the sky with last clear patch disappearing just above my house. The fog was actually forecast but not till 4am so I lost just over an hour. Best wishes Gordon
  25. Hi All I've been working on this for the last few weeks in between work and weather, it is of Sh2-157 (also known as the lobster claw nebula), I managed to get 12x30 minutes Ha, 14x30 minutes OIII and 9x30 minutes SII (would have got more SII but the whole sky misted up in the space of five minutes, reminiscent of the film "The Fog"). These were then colour combined according to the wavelength ordered palette so SII:Ha:OIII = R:G:B. It was taken with a FSQ106ED at f5, FLI ML8300 on a Paramount ME using a lodestar to autoguide with dithering. Processing consists of levels, curves, colour balancing and contrast adjustments. The Ha and Ha/OIII versions can be seen in the image gallery on my website http://www.imagingtheheavens.co.uk along with a much wider field version Below is a link to the full size version http://www.pbase.com/imaging_the_heavens/image/145929814/original Thanks for looking Best wishes Gordon
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