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Found 215 results

  1. Finally completed my SHO version. There is some purple in the image I cannot figure out how to get rid of and I'm sick of playing with it. Hints and tips on how to get rid of it welcome, I'm using PixInsight. https://pbase.com/grahammeyer/image/169136922 Scroll to the bottom for size options and details. Thanks for looking!
  2. Hi everyone, This has been on my hard drive for some months, so nice to have finally got round to processing it! Shot over several nights in January in my back garden. NGC 281, also known casually as the Pacman Nebula, is a bright emission nebula and part of an H II region in the northern constellation of Cassiopeia and is part of the Milky Way's Perseus Spiral Arm. It lies about 9,500 light years from us and is 48 light years across. As the final version, I've gone for a crop, which I think holds up well, though I'll include the wider fov version in the next post. I used a more natural colour blend for this image: R = 76%*Ha + 24%*SII G = 100%*OIII B = 85%*OIII + 15%*Ha For some reason, I was not expecting much from this image, but the result looks like it will be one of my favourites...the narrowband data was really good! Captured using APT, stacked using APP and processed in Pixinsight. 5.4 hours integration time. Link to full details and higher res version. Thanks for looking!
  3. Hello Astro Peeps, I hope everyone is all good! Isn't there some amazing images on this site and others. Amateur imaging has never been so good! I myself have finally managed to get some data for an image, of which I am very happy. It has been so hot here it has been impossible to get any good data. One day a couple of months ago, I hung the thermometer from the grape vine under the back verandah and it was 47.5°C. Sounds far fetched, although true. I live in Adelaide, South Australia and we are 11km from the CBD and usually 1.5 degrees hotter than there! Anyway, I thought I'd try my hand at a Ha, OIII bi-colour image while waiting for my SII data to come in. There seems to be a halo issue with some of the filters for which I will need to do further testing so I apologise for their distracting nature. Details are with the image but basically 3hrsx15min subs for each channel. https://pbase.com/grahammeyer/image/169113477 You can scroll to the bottom to choose another size or auto to fit your screen. Happy photon collecting! ? Details for those that cannot see them. Telescope: William Optics FLT132 Guide Scope: QHY OAG Camera: QHY9 Mono @ -20c Filter Wheel: QHY 7 position Ultra Slim Filters: Baader 36mm unmounted L R G B HA OIII SII Guide Camera: QHY5L-II Mount: AZ-EQ6 Mount Control: EQASCOM Focusing: SharpSky Pro and Sequence Generator Pro 3 (automated) Bahtinov Mask: No (initial focus) Capture Software: Sequence Generator Pro 3 Guiding Software: PHD2 Calibration and Stacking Software: PixInsight Processing Software: PixInsight Number and Type of Data Frames: L= X min, R= x min, G= x min, B= x min Ha= 12x15min, SII= x , OIII= 12x15min. Binning: 1x1 Total Image Time: 6 hrs Location: Lockleys Observatory B, Tanunda, Sth Australia Light Box by Exfso
  4. Hi, I am looking at buying one of these, and need some guidance. Celestron Nexstar 4 SE Sky-Watcher Explorer-130P Synscan AZ GOTO Celestron Nexstar 127 SLT MAK I ended up With these 3 Choices mostly because of the cost I am willing to do the first time, and it seems like they have some abilities (motorized with GoTo-options) Priority 1: I want to observe nebulas, and galaxies (i.e. Andromeda) on a decent "zoom" and focus. Priority 2: I want to do astrophotography. I've read elsewhere on the forum than its preferable to have an equatorial mount for astrophotography. As far as i can see none of the above have that, even if Celestron Nexstar 4SE is promoting astrophotography on the product info. Or have i misunderstood here and one of the above has an equatorial mount? The Product info on the Celestron Nexstar 4 SE says it has Alt-Az, EQ North & EQ South. Does this mean it has both options, az-al and equatorial mount?. I think should add that i consider myself at least an "above beginner"-photographer, and Photoshop user. I use NIKON D810 - is this even mountable on one of the telescopes mentioned here? I also have the Sky-Watcher Star Adventurer mini. Can i setup one of the telescopes mentioned with this and call it a telescope with equatorial mount? I guess some of these questions might seem stupid to you, but I just dont know alot regarding telescopes yet:) Thanks in advance for any replies.
  5. I started getting better skies , getting my old mount problems are an ongoing thing that I deal with nightly . I ran tests in the frigid temps. on ngc1977 and IC434 and the Flame to get a handle on it and get my Moonlite mini v2 control setup in SGP. I've been reading the Astronomical handbook on imaging and processing and I think my images are making improvements , 1977 is out of focus on my colored channels due to trying to do it by eye. I didn't get sgp to run a sequence until 3 nights later and now I've got rain. This is the 1st time running on these targets, colors aren't correct but, they're improvement. I would add the # of frames but, they're all different and good enough to get my settings set and they're going to pop when I make a run on them . I'm really excited that I could get this and to have a test like this after being beat to death for months trying to get the PO'MAN rig working like this.
  6. This is the 1st test night for this disabled AA with my new moonlite auto focer mini v2 control ,1st time collecting data on the Horsehead nebula with any camera that I've owned , {30s } 25 frames luminous and 10 red channel combined in AIP4win and PScs2 , astronomy tools . I used an asi 174MM cooled -20c Zwo mini 5 efw , 8 in astrograph , lxd55 mount guided with Orion 50mm mini w/ helical . Captured in Sharpcap live stacking , I'm 0n my way finally got my autofocus set up correctly in Sgp to run a sequence later that week . It's a great feeling when everything is working together.
  7. heyyyyy its meeeee, kronosss and today there is a full moon(i missed out on the eclipse because of clouds... huh i guess i gotta wait another 19 years...)and i went out in the b ackyard with my 3" reflector telescope the celestron firstscope! The seeing was kinda bad... the full moon had less detail than the quarter.... anyway i figured i could see something else then i turned left and i saw orion(book-pun -intended) and the stars were quite faint(bad seeing full moon and light pollution.) i tried locating the orion nebula, after some time i stumbled across a small extremely faint smudge just barely distinguishable, then i turned and zoomed in,(75x) i saw 2 small kind of blurry spots of light (focusing wasnt great andi have the worst 4mm eyepiece in history...) with a very faint dark grey light around them keep in mind i saw that light when not looking directly at the nebula(read that it makes light appear brighter somewhere, it works lol) sooo is what i am seeing indeed it? or are my eyes playing tricks on me? Cheers Kronos
  8. Heyyy its meee kronos and i have been wondering about getting a filter...I really want the best contrast and brightness i can on my nebulas(i want to view M42 M57 M27 M31 M81 M82 and lots more) with my future 8" dob. Is this filter really going to help me? https://www.firstlightoptics.com/uhc-oiii-visual-filters/es_uhc_filter_125.html If it just a matter of quality of the filter itself can you suggest a better one in the same price range? Or will not the uhc filter help me in general .IF so can you reccomend another one? Also is this https://www.firstlightoptics.com/uhc-oiii-visual-filters/uhc-filter.html this https://www.firstlightoptics.com/uhc-oiii-visual-filters/es_uhc_filter_125.html https://www.firstlightoptics.com/uhc-oiii-visual-filters/baader-uhc-s-filter.html this better?
  9. Spent the last three nights imaging these three objects. Managed to get them all in the same frame of my ES 102mm FCD100 scope. Pretty happy with how it turned out. I would have liked to have grabbed a little more SII data. When I originally captured it, I thought I might only have two clear nights, so I imaged it as HA/OIII. Turns out there's almost no OIII. On the third night, clouds were supposed to roll in about 4am, cutting the imaging session short, but it stayed clear the whole night, and I got a full night of data with the exception that I got a late start due to technical issues when I first started imaging. The ASI1600's halos are rearing their ugly heads on the two brightest stars. I tried to tone them down some by desaturating the colors around both stars...it worked a bit. Another 15 hours and I could probably get rid of any remaining grain, but just don't have the clear nights to get it done. 15.8 hours total imaging time. Equipment: Celestron CGX Explore Scientific 102mm FCD100 ZWO ASI1600MM-C ZWO Filter Wheel with Astrodon 5nm filters ZWO ASI290MM Mini guide camera Stellarvue F50G guide scope
  10. Hi all, This is the first image i post here. It has been taken in August/September from my backyard. It is one of my first image taken with my new Moravian G4-16000 CCD camera. Taken with my TeleVue NP101is modified with a new focuser : Modifications can be viewed here : http://www.poigetdigitalpics.com/photo-equipment3.html SH2-171 in LHa - R(ha)GB : Full resolution image in 4k x 4k at this link : http://www.poigetdigitalpics.com/G4-16000/sh2-171 New Version.htm Enjoy, Florent ?
  11. From the album: Mike's Images

    Cat's Paw Nebula - NGC 6334 ( aka Bear Claw Nebula ) An emission nebula in Scorpius (near the scorpion's tail) RA 17h 25m 39.6s ; Dec -35deg 43' 48" . 7th August 2015. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 28 x 200sec (starting at zenith) no moon, 3deg C, 70%RH, moderate LP. PixInsight

    © Copyright Mike O'Day 2015 - all rights reserved

  12. Hi Guys, I thought I would share with you my first DSO taken with my new Orion 8" Ritchey Chretien F8 Telescope. The frame is made up of 12 x 4min shots, no light or dark frames, using my Sony A7Rii camera. The camera had the long exposure noise reduction switched on, which does help to reduce the total number of stars captured by the camera, as the Sony A7Rii does tend to overdo the number of stars captured. The telescope was mounted on my trusty skywatcher NEQ6 mount and the guiding was via PHD 'of course' via my skywatcher ED50 guide scope. The shots were taken from my back garden in Stowmarket, Suffolk where I believe I am a Bortie 4 location, so the skies are mostly dark, with just a little light pollution from the main town, no filters used. My normal telescope is a Skywatcher ED100 Pro Esprit F5.5, which is an incredibly sharp scope, but with a wide 550mm field of view, great for capturing the whole of Andromeda but a struggle with smaller images like the Iris Nebula. I will say the Orion RC scope did need to be collimated out of the box, which was a little disappointing, and it was not just a little out of collimation, it was a long way out, but with the use of a collimating tool, I soon had it dialled in. First impressions of the Orion Ritchey Chretien 8" Telescope are fair, not super impressed, as it is nowhere near as sharp as my ED100 Esprit, but then this is to be expected based on price and telescope type, however, the pictures it has produced are pretty good, if you downscale the full 42MP from the Sony A7Rii camera, as can be seen in this picture. I purchased this 8" Orion Ritchey Chretien OTA mainly for Planetary work, but as yet I have not had a chance to 'get onto' a planet, fingers crossed some clear nights will arrive soon, so I can try. I welcome comments, many thanks Jamie
  13. Finally making progress with guiding and dithering and the autofocuser , sw200pds , modded canon 1000D , Eq6 belt mod -7x300sec 25 flats -25x Bias as darks
  14. M1 Crab Nebula taken 7 Oct 2018 from my garden. ZWO ASI 183mm Pro C11 on Mesu 200 12 x 120s subs for each RGB. Processed in Pixinsight.
  15. Maxrayne

    NGC 7000 220mm-1.jpg

    From the album: Nebulae

    © Graeme Healey Photography

  16. Maxrayne

    NGC 2024-1.jpg

    From the album: Nebulae

    © Graeme Healey Photography

  17. Maxrayne

    M42 400mm Ap Mask-1-2.jpg

    From the album: Nebulae

    © Graeme Healey Photography

  18. Greetings everyone. Few months ago I wrote a post about a small refractor to mount on a Star Adventurer, but I'm now considering fast tele lens like the Nikon 80-200 f2.8. My question is: what is the best tele lens to get pictures of Andromeda galaxy, Orion, Soul, Hearth nebula and stuff like these? If I'd pick a 70-200 f2.8 lens, can I plug a teleconverter 2x to get better crop without losing details? I've attached a picture taken with my Nikon D3300 and 18-105 kit lens, as you can see it's quite small (forget about the quality, it was also quite foggy back then). Thanks in advance.
  19. Reprocessed to try to better balance the colours ... (previous version: http://stargazerslounge.com/topic/239687-eta-carinae-nebula/ )
  20. Conditions have been very poor down in Sydney for the last month (rain, clouds or 'darn' moon every night ) so no new images but at least I have plenty of time for lots of reprocessing ... This one was captured back at the beginning of the year and I'm still playing with it. Here I have been trying to get to grips with the HDR composition function in PixInsight. It is built up from four sets of around 20 images each at 4sec, 8sec, 30sec and 120sec all at ISO800 with my unmodified Nikon D5300. And this is the previous attempt. I think I prefer the composition, colours and contrast of the new version.
  21. A new target for me - the Running Chicken Nebula sits about halfway between the Southern Cross and the Eta Carina Nebula. IC2948 Running Chicken Nebula in Centaurus ( bright star is Lambda Cenauri) (RA 11h 39.6m - Dec -63deg 37.2'). Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT (on Pier) Orion auto guider - PHD2 (RA only - Dec ungiuded). Baader MPCC Mark 3 Coma Corrector, UHC-S (Nebula) filter, Nikon D5300 (unmodified), Long Exp Noise Reduction on, 14bit NEF, 13 x 300 sec ISO 200. PixInsight & Photoshop 28 March 15
  22. Second image with QSI660. 10x200second subs in Ha, Oiii and Sii. Combined in Maxim with Hubble palette (ish0. the green seems a bit strong, but I suppose that reflects the high Ha levels being dominant.) Darks and Bias frames used for calibration. No flats.
  23. Bright Nebula NGC 6188 and open cluster NGC 6193 in Ara Magnitude +5.19, RA 16h 41m 42s, Dec -48deg 48' 46" Approx. 3800 light years away Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount (on concrete pier) Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. UHC-S - 32 x 180 sec ISO800 (14bit NEF, Long Exp. NR on). Pixinsight and photoshop 7 July 15 (processed 29 August 15) Other images: photo.net/photos/MikeODay 500px.com/mikeoday
  24. Observations of the Sculptor Galaxy ( NGC 253 ) by William and John Herschel ......... Part 2. Observations of "Caroline's Galaxy" by Sir John Herschel, 1830's Sir John Herschel, the only child of Mary Baldwin and Sir William Herschel, was born in 1792 when his father was in middle age and already famous as one of world's leading astronomers. Having excelled in school, and no doubt inspired by his famous elders, John Herschel decided upon a career as a 'man of science' and set out to pursue a wide range of interests; with one particular focus being a continuation of the study of the heavens commenced by his father and aunt, Caroline Herschel. In 1820, with the assistance of his father, John Herschel supervised the construction of a new telescope at Slough in England. As described in the extract below ( from a paper presented to the Royal Society in 1826, titled "Account of some observations made with a 20-feet reflecting telescope ... " ), the telescope had a polished metal mirror with clear aperture of 18 inches, focal length of 20 feet and was modelled on the same design created by his father. It is this telescope, in the 1820’s and early 30’s, following the death of his father and the return of his aunt Caroline to Hanover, that John Herschel used to 'sweep' the night sky and extend the catalogue of nebulae and clusters of stars that was published by his father ( see W. Herschel's Catalogue of One Thousand new Nebulae and Clusters of Stars ). On the 1st of July 1833, having complied sufficient observations, John Herschel presented to the Royal Society an updated list of the positions and descriptions of the Nebulae and Clusters of Stars that he had thus far observed. As noted in the introduction to the paper published in the Philosophical Transactions, he had planned to wait before publishing until he had complied a fully comprehensive general catalogue of objects visible from the south of England. However, due to his expectation of “several more more years additional work” needed to complete the task and his assessment that he now was in a position to address, at least in part, the then current “... want of an extensive list of nebulae arranged in order of right ascension ...”, he elected to present his list, “ ... simply stating the individual results of such observations as I have hitherto made ... “. It was not until October 16, 1863, some thirty years later, that Sir John would deliver to the Royal Society his General Catalogue of Nebulae and Clusters of Stars. As well as introducing many objects that had not previously been recorded, Sir John’s list of 1833 included a re-examination of, and in some cases a small correction to, the positions of many of the deep sky objects observed by his father and noted down by his aunt. One of these re-visited objects was, unsurprisingly, the large and bright nebula discovered by Caroline Herschel in 1783 and recorded in Sir Williams’s catalogue as V.1 / CH 10 ( object number one, of class five ( very large nebulae ) / Caroline Herschel #10 ). In total, John Herschel records around 2500 observations of nebulae and clusters of stars in his 1833 paper; with observation #61 being V.1, the “ Sculptor Galaxy “ . The measured position of V.1is given in RA and the angle from the north celestial pole ( all reduced to epoch 1830.0 ). The description can be interpreted by reference to the legend in the paper. Thus, “ A vL mE vB neb “ becomes “ A very large, much extended, elliptic or elongated, very bright nebula “. He also notes that in addition to this observation, #61, noted down from sweep #306, V.1 was also observed in sweep #292, “but no place was taken”. The figure to which he refers , figure 52, is included towards the back of his paper and is a sketch he made of the Sculptor Galaxy. to be continued ...
  25. From the album: Deep Sky Objects

    3 hours total integration on NGC6995, The Eastern Nebula. 20x180sec Ha and 40x180sec OIII. 25 flats, 25 darks.
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