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Found 18 results

  1. The Needle in RGB A beautiful edge on spiral galaxy in the constellation Coma Berenices, around 38,5 million LY from earth. Investigations with the Spitzer IR telescope suggests that the galaxy may actually be a barred spiral galaxy with an inner ring as well. -------- Finally got around to processing my data on NGC 4565 from March. This was one of my "test projects" from this year, where I only shot R-G-B and created a synthetic luminance master from those frames. I think that the most efficient way is still to shoot pure luminance and then just enough R-G-B to get the color you want. Unless one is imaging star clusters, then I think it is totally fine to skip luminance altogether and get as much color data as possible. I will try to do a "super luminance" where I add the R-G-B frames to the luminance stack at some point as well. Shot with my Hypercam 183m V2 and totalling aroung 4,2 hours of data. More info here: https://www.astrobin.com/412663/B/ Comments and critique is always welcome. I decided to put this post in "Getting started with imaging" as it may be interresting for beginners thinking if luminance is worth it.
  2. Hi guys Looking at getting some rgb filters and I def understand you get what you pay for. Anyone able to recommend a quality 1.25 set for a reasonable price . ??si
  3. Probably a stupid question... Heyyy soo i am a begginer and about to buy my first telescope.A Skywatcher 200 p. I ve just though of something , Since i know filters can be stacked i ve been wondering if i could take visual RGB filters and stack them.Specifically blue green and red in order to create a visual full colour image ,like photography. I know its probably a stupid question because people all over the world would have done this by now .But i m just curious. -Kronos
  4. The bright, almost fully illuminated moon doesn't interfere as drastically with bright objects like globular clusters as with fainter, less condensed targets. This is an RGB image of M3 - I never bother to make L exposures with globulars these days, the signal is generally strong enough in the colour channels not to need it. Minimal processing - just stretching and a little sharpening in PI. 12" TS/GSO RC at F/8 on a Mesu 200. Atik 383l+, AtikEFW2, ATIK OAG, Lodestar X2, Baader 36mm filters R=G=B = 5 x600s binned 2x2. Click on the image and then select "Full Size" if you want more detail :-) Comments welcome Derrick
  5. Morning all, Been a bit slow sharing this cos I keep trying to reprocess to get a better result - this one is from 90s captures in each channel, de-rotated the AVIs in Winjupos, but I've just aligned the final RGB images in Photoshop. I'm having real trouble with the RGB image de-rotation process in Winjupos; it seems to add loads of noise that's not there in the source images...? Anyone else seen this? Anyway, this one is still somewhat noisy but I'm fairly satisfied considering I haven't done much with this equipment for a while! I got several other captures that night so am considering doing a little animation just for giggles. Haven't tried that before. Cheers folks Jim Celestron 9.25" SCT, DMK21 w/ ICX618 cip, Astronomik LRGB filters, EQ6 SE London murky smoggy 'orrible skies
  6. (The heading was a click bait, admitted. Who would click on just another "Elephants Trunk" ;-) In lack of fresh data due to perma clouds over my head, I recycled some old data trying to compete with myself and maybe progress some in post processing. I choosed a target that I have found to be very difficult to process, and I think it came out a little better. What do you think ? All suggestions are welcome. The brightest orange star to the right in my image is a red supergiant called The Garnet Star, or Mu Cephei. It´s a "runaway star", travelling with a speed of 80 km/s relative to the "local average". It also has a spherical shell of ejected material, which expands with 10 km/s. And look at the size (it is the red star in the #6 pic) here. Imagine it being in the position of our Sun, this star would reach somewhere between Jupiter and Saturn. Oh, and the red blob to the left of the star, I guess you all have seen it a few times ;-) Imaging was done with a modded Nikon D7000 on a HEQ5 Pro, guided with NexGuider. Today I would have used iso 200 instead of 800. Main image is taken with an old Tokina AT-X 250-500mm F5.6 @250mm & F8, iso 800 : 21x10 min (Hutech IDAS LPS-D1 used) Small details from my TS APO 700mm F6.5, iso 800 : 26x10 min (Astronomik CLS filter used) I started from scratch and stacked the 250mm & 700mm subs in different stacks, using Registar & PS. Removed stars with Straton, patched in just a few details from the 700 image, then restored the stars from the "before" image but in a more controlled way. Also used the StarShrink plugin. Before : After : Ragnar
  7. Second of my attempts at RGB (rather than LRGB) imaging of globulars in bright moonlight and again I am pretty pleased with the outcome. I imaged M3 in my earlier post binned 2x2 in each channel but decided to try M13 unbinned so what you see below is imaged at a plate scale of around 0.46 arc seconds / pixel. If we get any more clear nights in the near future I intend to re-image this object using an Astrophysics 0.67x reducer to see if there are any major differences (other than the obvious FOV) at a larger plate scale. Minimal processing - just stretching and a little sharpening in PI. The PI Masked Stretch process works very well with globular clusters IMHO bringing out the fainter stars without blowing out the core. 12" TS/GSO RC at F/8 on a Mesu 200. Atik 383l+, AtikEFW2, ATIK OAG, Lodestar X2, Baader 36mm filters R=B = 7 x600s, G = 5 x600s all un-binned. Click on the image and then select "Full Size" if you want to see the full detail :-) Comments Welcome Derrick
  8. Hi all, I have been spending the last couple of weeks trying out Winjupos for de-rotating and combing my RGB images (thanks Neil). The data looked reasonable from the 19th, so I have played the most. Below are the 3 RGB channels and the combined image. The RGB's were 150 second SER files, stacked in A/S2, wavelets in Reg6, then to Winjupos for measurement and combining. I have done no processing after combining. Still can not help thinking there is much more detail to be got out of the data though. red channel green channel blue channel RGB combined in WINJUPOS
  9. Thought i would reprocess my Jupiter captures from the 04-03-2013, time run was from 8:18 to 8;56. Processed in AS!2, best 30% from 3000 frames per channel, wavelets in R6, Winjupo Derotate & finally into CS6. For comparison i have added the first avi of the night processed alone & then the 3 x avi set which is compossed of 3 x R,3 x G & 3x B channels, pos & neg comments welcome please & i hope you like them. Single avi 3 x avi Derotated
  10. This came as a bonus target, I didn't really plan to shoot it, but I took the opportunity to grab some frames before astrodark or with the DSLR or waiting for other targets So this is a mix of everything: 10x2min Ha with the ASI1600 and 130PDS on the AZ-EQ5. 11x3min Ha with the ASI1600 and Esprit80 on the AZ-EQ5. 19x5min Ha with the ASI1600 and Esprit80, 11 on the AZ-EQ5, 8 on the EQ6-R. 15x5min Oiii with the ASI1600 and Esprit80 on the AZ-EQ5. 74x90s with the DSLR and 130PDS on the AZ-EQ5. For a total of 5:34h. Crop of RGB, HOO and HOO-RGB. Which are your thoughts before I call it the final version? Clear skies! Alex Edit, final:
  11. Hello all, I started a while ago shooting the bubble and the M52, first in Ha, then RGB and then O3 too. 25min on each RGB channel, 5-6 h on Ha and 1.5h on O3. Here is the result: Then I asked myself if I should shoot L, more RGB, more narrowband or if I should go for another target. And I decided that I should try a mosaic in this area and catch the lobster claw too. The decision being took, I went below, left and then above again for panels 2, 3 and 4. R first, some of the G after. The rest of G and the B the next night. Last night I also shot 45 minutes of O3 on each of the remaining panels - 2, 3 and 4 and planning to shoot another 45 minutes on each panel the following nights, if possible. I will then leave the country for 2 weeks and I'll be back with a full moon when I will try to shoot some Ha. There will be no much time left either for this target as it reaches the limits where I can point my telescope from my balcony. I'm aiming for 1.5-2h of O3 on each panel and 2-3h of Ha this year. Supposing the acquisition can be done, I still have to stitch/process/stitch/combine all the layers. Now, this is something I've never done before and I don't know which is the best approach. I tried yesterday the new APP, I threw at him all the R subs and asked it to combine them in a mosaic way or a normal way. In mosaic it was failing with a null pointer exception and in normal way it was failing with an index out of bounds exception. So I answered myself an older question if I should wait for the APP or buy Registar and I bought the second after the first one didn't work. I registered and stacked with DSS all the R, G, B and O3 frames for each panel with the best R frames set as reference. Then I processed with StarTools each panel as RGB with the same settings and combined the RGB panels with Registar. Now this gave me a result which is almost ok, but you can see a separation line or two between panels 1 and 2 (the one with the bubble and the one below). I processed each O3 layer with StarTools applying the same settings and I combined these too with Registar. Then I split the RGB mosaic into channels and I added the O3 over the G and B channels as lighten only in GIMP and I combined back again the layers into an RGB image. I colour balanced and enhanced this result in StarTools. The result is attached. What do you think about my workflow and what approach did you find the best and how do you do it? Also, how can I normalize the layers and still be sure that I stretched them the same? There are some variables that come into play, the worsts mostly because during multiple nights I have different transparency and seeing conditions. Many thanks and clear skies, Alex PS. and an annotated version: http://nova.astrometry.net/user_images/1668494#annotated
  12. Evening Folks, Here's my first attempt using my new ASI120mm and Baader RGBL filter set on the SW200p HEQ5 and Revelation 2.5 Barlow on the 4th at 11pm. I got the camera about a month and a half ago but as the weather has been so bad I've not had a chance to use it so feeling a bit rusty with planetary imaging. RGB= 2000 frames each L= 2600 Captured in Fire Capture Thanks
  13. As in the title, I'm wondering if planetary imaging would be feasible with a mono camera (ASI1600MM) and using RGB filters to obtain a colour image or would planetary rotation make this impossible?
  14. Hi, When doing color images from DSLR color cameras it could be a bit frustrating to find correct color balance. If you could get to know your DSLR camera's own RGB scaling factors it could be a starting point how to set the scaling factors. With the tool DCRaw you can get these values. Here is a tutorial I have wrote how to use DCRaw to find these values: http://www.astrofriend.eu/astronomy/tutorials/tutorial-rgb-multipliers/tutorial-rgb-multipliers.html I have only use it to my own Canon DSLR, but should work on all cameras that DCRaw support I think. /Lars
  15. Hi I'm selling my Baader 1.25" CCD RGB filters. They are used, but in excellent condition with no scratches or anything of the sort. Price £115 including delivery to a UK address. Payment via Paypal (buyer pays fees), Paypal friends, or bank transfer Any questions, please ask.
  16. So we had some fine weather overhere in The Netherlands during the past 3 weeks, and I took full advantage of the clear nights arounbd the full blood moon (which for me was eclipsed not by the Earth's shadow but by grey clouds as I live in the only part of the country that did not have a clear night during the eclipse) and shot some lovely Ha data of NGC6914 (awaiting processing) and Messier 42 during the second part of the night. The Ha data comprises 7 and half hours of 10 min subs at ISO800 with the Canon 350D/8"Newt, calibrated with darks, flats and bias in DSS and processed in PS CS3. Last weekend, we again had lovely clear nights, and so I shot some RGB data on the Canon 350D/8" Newt combo as well. Also imaged M33 during those nights while waiting for M42 to rise, but again that data still awaits processing. The RGB image consists of 6 hours 25 min of 5 min subs at ISO800, calibrated with darks, flats and bias in DSS and processed by the DSLR-LRGB method in PS CS3. I had wanted to add the Ha data to the RGB image, but for now, it doesnt seem to significantly improve the image, so I just left it out. Hope you enjoy these images, I do, as it was the first time I could image M42 with it not moving through the trees every couple of hours. Great to have my LOMO observatory on my balcony.
  17. Ladies and Gentlemen, With the assistance of my good friend 130P-DS, I offer you this as proof that the NEQ3-2 Mount can be used for astrophotography. What DSS says are the best 80% of 87 60-second subs (proving you can get plenty of usable decent-length subs with the EQ3) at ISO 1600, astro-modded Canon 450D. Also my first use of a £10 light pollution filter off eBay and the first image I haven't had to do ANY gradient correction on at all. (Can you tell I'm chuffed - even so I know it's not perfect, I expect to keep coming back to this and reprocessing it for a month or more and constructive advice more than welcome).
  18. M64 taken over 2 night, in RGB, All filters were 12 x 6 mins. Using an Atik 314 mono, scope was a MN190. Thanks for looking.....
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