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About PhotoGav

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  1. The Core of the Rosette Nebula

    Extremely interesting, thank you for sharing that link.
  2. The Core of the Rosette Nebula

    Thank you Steve, an interesting answer. Like so much of this astrophotography, there are many possible solutions all with their own advantages and the only way to choose your favourite is through experimentation and looking at other people's results. Though even that is generally comparing apples and oranges! I look forward to your next instalment of The Rosette Nebula.
  3. The Core of the Rosette Nebula

    But is that really a good thing?! I am very interested in your choice of 3nm over 5nm and your image of the Rosette is a stunning advert for the lower band pass. I am also interested in your comment that you weren’t sure if you had made the right choice and just wonder how much of a difference do those 2nm really make? Barry & Steve are using 5nm Astrodons in their Spanish setup with great results, but would 3nm be even better?? If you were about to purchase the Astrodon Ha filter now, which would you order? Sorry to take the thread off on a slight tangent, but hopefully it is generally useful and vaguely relevant!
  4. The Core of the Rosette Nebula

    That is the question...! Why not 3nm every time? (Apart from the £165 difference!). No seriously, who can tell me why a 5nm filter is a better idea than the 3nm filter?
  5. The Core of the Rosette Nebula

    Looking very promising, Steve. I think your reframing idea is a good one. Nudge the line of Bok Globules up a bit and you’ll catch the whole string of them. The whole approach of processing data mid project is a very worthwhile exercise as it can hugely influence the project in a positive direction before it’s too late to change. I used to wait until I had collected every last sub before touching the data, but nowadays I have moved to APP for integration and it is so simple that I am starting to look at how things are going after each collection session and making changes along the way as a consequence. Good luck with the continuing project and clear skies - which I think could be at a premium for the next while!
  6. PHD2 guiding - Silly question

    I have been finding that the last couple of recent nights I’ve been able to image, my guiding has not been great. I think this is due to sky conditions, which looked OK, but looking closely at the all-sky-cam time lapse I realise that there has been a lot of thin high cloud scuppering things. So, don’t be too disheartened by recent results!
  7. Messier 78 - a dusty favourite

    Excellent Barry. You probably wouldn't get that result in Totnes!
  8. PHD2 guiding - Silly question

    It should work, but I have found that USB is the Achilles Heel of my system. Things are capable of dropping out randomly. If you have problems with your setup it might be worth plugging the guidecam straight into the powered hub rather than through the ASI camera. The good thing is that recent versions of PHD2 will automatically reconnect the guidecam if it drops out - that’s saved me on many an occasion!
  9. IC 410 - The Tadpole Nebula

    Thank you for your encouraging comments @Allinthehead, @swag72, @souls33k3r & @Barry-Wilson. Sara & Barry, I’m delighted that you have specified the Tadpoles themselves as I spent quite a portion of the processing time concentrating on bringing them out as much as possible, without totally ruining the ‘science’ of the image!
  10. PHD2 guiding - Silly question

    While it might be best to calibrate near the Celestial Equator and Meridian, I find in practice that so long as you are not too near the Zenith or North Celestial Pole, you can calibrate wherever your target is. Otherwise, as you say, slew to a point near the Celestial Equator and Meridian, calibrate PHD2 and once it has finished it will start guiding, stop the guiding, then centre up on your target, select a guide star and click start guiding. Simples! Good luck, Gavin.
  11. Orion and Running Man Reprocess using APP

    Looking good. APP really is a great bit of software. About my only complaint with it is the awful death knell that rings every time it finishes something! I know I could turn it off, but I like the warning noise, I just wish I could change the sound it plays...
  12. The Tadpole Nebula, IC 410, is an emission nebula some 12,000 light years away in the constellation of Auriga. This expanse of excited hydrodgen gas is over 100 light years across. At the centre of the nebula is the open cluster, NGC 1893, a collection of relatively young bright stars at around 4 million years old. The stellar wind from these stars is thought to be responsible for pushing out the gas and dust to create the sculpted clouds surrounding the cluster. It is hard not to notice the two 'tadpoles' - streams of gas and dust that stretch about 10 light years away from the centre of the nebula. They consist of denser, cooler material than the main nebula and are likely sites of ongoing star formation. Tech Spec: Celestron EdgeHD 800 with 0.79x Reducer, QSI 683-WSG, HEQ5 Pro, Baader 1.25" filters Ha = 33 x 1800s OIII = 30 x 1800s RGB = 15 x 180s each TOTAL = 33 hours 45 minutes This image is basically a bi-colour image with Ha in the red channel, OIII in the blue channel and a mix in the green channel (I used Noel's Actions to create a synth green channel). The RGB data was used to colour the stars. All integration and an initial development stretch was done in APP. I also combined the RGB data in APP. I then took the stacks to Photoshop for the majority of the processing. I am pretty happy with the overall result, though it does have a slight softness to it, as all Schmidt-Cassegrain images tend to. I can live with that though! I hope you like it and I look forward to seeing your thoughts and comments. Clear skies!
  13. NGC2244 Rosette Nebula

    Exquisite, a wonderful rendition of this object, Barry. You have a beautifully delicate colour palette, striking detail and the tiniest of tiny stars I’ve seen on here for a while! And all from Totnes, I don’t know what all the rush to set up in Spain was about!!!
  14. Wifi in obsy...

    When you run Cat6 (or 5 if you didn't heed Steve's advice) cable to an observatory, what does it connect in to at the observatory end? Sorry, probably a dumb question, but I just don't know and this seems like a good place to ask!!
  15. Wifi in obsy...

    The mantra of the astrophotographer!!!