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About Filroden

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    Sub Dwarf
  • Birthday August 26

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    East Cleveland
  1. Cone in Ha and HaRGB

    The Ha version makes me want to reach into the screen and feel its luxurious texture. A real winner.
  2. NGC7822 - A 2 pane mosaic

    That’s beautiful and a target I’ve not seen before. Reminds me of Darth Vader tilted 45 degrees.
  3. Orion Nebula Ha Reprocess

    Second one for me though I’d want to enhance contrast inside the main area of the Nebula. I like the softer, more delicate processing.
  4. The "No EQ" DSO Challenge!

    That's a nice image. The core is showing some nice detail and you've got the colours balanced well. I can see a few things that could easily be adjusted for future sessions. You don't mention taking flats. These can have the single biggest impact on the image and remove the vignetting. This allows any remaining gradients to be more easily processed out using software. Your stars also look to be elongated. I can't tell if they are radial, and something to do with the optics, if they are rotational and therefore field rotation, or whether they are caused by camera vibration. I know what I used DSLRs I would include a delay between the mirror flipping up and the exposure being taken to give time for any vibrations to settle. Ideally you will want to lock the mirror up. Otherwise, the next thing is just to keep gathering more data. 20 minutes, even on a target as bright as M42, will still leave you with a lot of noise. Aim to gather about 2 hours of light subs. It's your choice of whether to stay with 15s or push for longer. The former reduces risks of star trails but increases processing time and storage requirements. 2 hours at 15 seconds means 480 subs to integrate!
  5. Horsehead and Flame 3 1/2 hours Ha with a DSLR

    That’s an amazing difference. You’re starting to draw out some of the really faint detail which looks almost like waves of turbulence behind the main ‘front’.
  6. Horsehead and Flame 3 1/2 hours Ha with a DSLR

    That’s a lovely Ha image though I think you have something going on in the upper right corner and to a lesser extent the top border. Amp glow? I don’t think the RGB combine has worked well. Maybe just the Q&D processing or Is this different from a very different image scale?
  7. That’s a really useful side-by-side comparison. Do you think it was all calibration files or just bias or darks causing the issue? I take flats every session but I rarely redo bias or darks. New bias is a quick job but rebuilding a dark library can take a day or two so not something I want to do often
  8. M101

    Another lovely image. I think lum data might add more than Ha and define more detail.
  9. Choice of Ha Object Tonight?

    Jellyfish, Monkey Head, California...and depending how high is high, the Rosette.
  10. Skywatcher Esprit 100 star-shape

    Hi Patrick First, congratulations on getting the clear night to test the scope I suspect it's the combination of the higher gain plus long exposure times. The ZWO1600 does not have deep wells and will quickly saturate. I'd normally only push 600s subs for narrowband. At unity gain I'm still saturating the bright stars at 120s. So going 5 times longer is likely saturating their halos leading to the bloated shapes. I'd give shorter subs a test. Your histogram is quite over to the right. Jon Rista has done a lot of testing with this camera and you don't need to get your histogram too far off the left to deliver similar results by integrating more shorter subs than less longer subs. Alternatively, try dropping the gain so you can recover a little dynamic range. Unity at highest (139?) but try 75 too. It my require a combination of both.
  11. nebula monkey in orion

    I think it’s anything but underwhelming. It’s a tough RGB target but add some narrowband and the detail will start to come through. I think your image is great for 2 hours but more time will start to fill out some of the fainter structures both to the right in your image and in some of the surrounding area.
  12. NGC281

    That’s spectacular. I love the colour graduation and how it emphasises the fainter detail within the centre.
  13. Indeed. With the Jellyfish and Lower’s Nebula on either side it’s a lovely area just before galaxy season hits. I can understand why it could be considered boring. I put of imaging this target as it didn’t look interesting in many images but then I saw someone do a great narrowband and just had to take a look myself.
  14. M33 - my first go at including Ha

    I’m a fan of the more saturated look. The only thing I’d tweak in both images is there are a few green patches in and around the arms which could do with a blast of HLVG or SNCR depending on your processing software.
  15. Thanks Chris. Yes they are Byproduct of the quick process. I cheated during the stretch and combined Arcsinh and masked stretches which give very intense star colours. I’ll be using more traditional methods in the full process.