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Found 18 results

  1. Hi All, If anyone is looking for a great telescope, I'm selling my NexStar 8SE. It's in great condition, Optics are immaculate and there is only some signs of use on the dovetail bar and the black rim that has faded a bit on one side. The reason that I'm selling is that I'm looking to upgrade. I had some amazing views of planets and DSO through this scope.... it really is a performer in quite a compact package. This scope was on a CGEM most of it life so the NexStar Alt-Az mount was hardly used. I prefer to have this scope local pickup or I'm happy to deliver and even give a tutorial and demonstration of how to use it.. for that reason I'm targeting a buyer around Sydney Australia. The price I'm asking is $1650AUD. Clear Skies.
  2. Hello Astronomers, I got the Topaz Labs Detail and DeNoise PS plugins and I have to say that they are great... noise is literally seek and destroyed without effecting the detail.... After playing with it for a couple of days I say that the plugins are definitely definitely worth getting. I reprocessed my M16 data from July this year and used topaz detail and denoise to try to get some more detail... I also applied the denoise filter to a JPEG image of the horsehead nebula from last year and, well I think the results speak for them selves. Clear skies, MG
  3. Hi All, After a 8 month break due to moving I finally had a chance to do some simple Deep Space imaging. This image is of the Tarantula Nebula in the Large Megallenic Cloud (NCG2070). This is imaged using my modded Canon 40D at F10 2032mm using a Nexstar 8SE on a CGEM mount. The image consists of 12 x 5 min subs, 5 x 10 min subs and 10 x 1 min subs, all in RGB through a IR Cut filter. Currently I'm working on using the PEC feature on the CGEM, and after I've spent a few hours before trying to work out how it works... when it got to past midnight, I was ready to call it a night but decided to frame up on the Tarantula and give it a go... I thought it's not to shabby for a quickie, so I'm sharing it. As far as PEC goes, next time I get to do some astro, I should have NexRemote, PECTools and PHD to give me a average PEC training from 10 cycles... hopefully it'll improve the guiding accuracy and hence detail in my 2000mm imaging close up images. Thank for looking, Mariusz
  4. Hello Astronomers, After a 5 month break from imaging due to moving house, I managed to setup the gear and get a couple of images that (I think) are worth sharing. These are quick processes of the data captured, but I'm happy enough with them to share. I'll spend some more time processing the data later and if it's an improvement I'll reshare the pics. Thank for looking, Mariusz
  5. From the album: Deep Sky Imaging

    While waiting for the Tarantula to get into imaging position to grab some Ha and OIII subs to add to the previous posted image, I decided to do a quick 47Tuc image. Unfortunately when centered, there was no guide star in the OAG at the current setup, and I did not want to alter the position of the OAG since it was still setup from a previous session to continue on NGC2070... so some unguided subs of the glob had to suffice... it's only 15 x 60sec, 15 x 30sec and 15 x 10sec subs in ISO800 at F10 using the modded Canon 40D. Seeing wasn't the best but surprisingly being unguided the stars were round, fat but round... I guess it's only 60 seconds at longest sub and PA was quite accurate.

    © Mariusz Goralski

  6. From the album: Solar System Objects

    Jupiter Reporcessed from 17th February 2015 data captured with a Celestron Skyris 618C through a Baader Moon & Skyglow Filter and a 2X Celestron Barlow through a Nexstar 8SE using Firecapture.

    © Mariusz Goralski

  7. From the album: Deep Sky Imaging

    This is a reprocessed image of the Helix Nebula Data I captured and posted previously. This image has been exposed across 4 nights, 2 nights through a HAlpha filter and 2 nights through a OIII filter using my modded 40D. Helix nebula is fainter than I thought it was going to be, I had to image it at ISO800 30 minute HAlpha subs and ISO1250 OIII 30 minute subs, total of 8 hours through each through my 8" SCT at F10. I just wish I captured more clearly the comet shock waves visible in the Hubble images... But overall I'm happy with how it came out... As always there is room for improvement...

    © Mariusz Goralski

  8. From the album: Astronomical Equipment

    I had just acquired my new 8 SE and realized very quickly that I needed an observing chair. So I built one. I'll show you the important modifications I made in subsequent images
  9. If you happened to have read my other thread from a couple of months ago, or were one of the several very helpful people who posted in it, you may recall I got re-started with amateur astronomy a couple of months ago with a small Celestron 114, which I quickly returned for an Astromaster 130. While I think the AstroMaster is a decent telescope for the money, I quickly got frustrated with some of its limitations (especially the shaky mount and tripod) so I started looking for ways to upgrade. I was close to buying a homemade 10-inch Dobsonian a couple of weeks ago, but someone beat me to it. Then a few days ago a Celestron NexStar 8SE showed up on Craigslist. It was described as several years old but hardly ever used and in like-new condition. For $650. After chatting with the seller, I was able to get him to go to $600 (he really just wanted to get rid of it). That alone wasn't too bad of a deal, I thought, but.....he was also including a Celestron hard case, and an accessory kit with some eyepieces (which I probably don't need, I have several now) and planetary filters (which I was considering anyway). Sold! The case alone sells for around $300 new. The only catch was I needed to drive 2 hours each way to pick it up, which I did last night. Checked it out, and it seemed to be as-advertised, so I happily packed it up and headed home. Since I got home really late last night I left everything in the garage until this morning. When I started putting the telescope together I opened the accessory case and not only was there the accessories previously mentioned....but there was also a Neximage camera in the case! The telescope is in excellent condition, the motor drive works, optics look good so far (its still daytime) and the camera works. I can hardly wait for it to get dark tonight! Anyone who has any tips on this telescope, please feel free to share. I'm already planning on getting a power adapter (if I don't already have one, I have a whole box of different ones collected over the years - yes I will be sure the output and polarity are correct!). Certainly seems like it was worth the drive!
  10. Hi All, I was lucky to have had a night of particularly clear and crisp seeing. I was planning on doing nothing more than observing tonight but after seeing nice steady and detailed views of Mars and Saturn at a magnification of 406X in my 8SE I was told by missus that I will regret it if I don't image these planets tonight.. I'm glad that I did. I'm stoked with the results so I'm sharing them with you. It does go to show that seeing and collimation are extremely important when imaging. Thanks for looking. Mariusz
  11. Hi all, I thought I'd share my observation from this night. At approximately 22:00 local time I was already setup and ready to image Mars and Saturn. As I'm using a mirror diagonal for framing/searching purposes I looked through it and focused using my 40mm LV eyepiece. What I saw in the eyepiece took my breath away. The disc was massive and detailed. I stack Baader Contrast Booster and Neodymium filters for planetary viewing since it does make a considerable difference in revealing detail and increasing contrast. Mars showed a big disc with two CLEARLY visible patches on both the "north" and "south" (equivalent to earth location polar cap regions). There was a clearly visible dark greenish borders around the white patches. The bottom part was white and crisp with a irregular dark greenish patching bordering it from the pinky orange center of the planet. The equator region showed some dark markings around where, I think, Olympus Mons is located. Now I'm not saying that I spotted Olympus Mons in my 8" SCT but I'm thinking, and hoping, maybe... there was definitely something there along with other more subtle spots and shades. This was hands down the best view of Mars I've ever seen. After Mars I had a look at Saturn, it was big and clear although it was not the clearest I've ever seen. Last year I had a clear view of Saturn's cloud bands and a crisp Cassini division surrounded by 5 of its moons (that was the best view of Saturn I ever experienced). This time the Cassini division was there but not as defined as before and any cloud bands were a struggle to see, and the Cassini division was coming and going. There were 4 moons around it glistening in the dark. I know some of you might be wondering why I have seen such big discs using only a 40mm eyepiece. The magnification was at least 250X-300X judging by the size of Saturn in my past experience near opposition using nothing but eyepieces and a diagonal. The reason why the magnification was so high with the 40mm was because it was a bit of a distance away from the visual back and I was also using a Celestron 2X barlow, due to me being setup to do planetary imaging. The lineup was a 2X barlow, 1.25"-2" adapter, a Vixen flip mirror, on the mirror the 40mm eyepiece, and behind the flip mirror were a filter wheel and a IS 618 CCD as shown in the pic. Does anyone know how to work out the actual focal length in a setup situation like this? The pictures didn't come out as crisp as I though they would after the seeing I was experiencing, I'm thinking that the line up caused a bit too much magnification. When I tried the 2.5X power mate the magnification was less, about 60% of the size with the Celestron 2X barlow, I think the TV 2.5X powermate should be labelled 1.5X. I didn't capture any images through the PM due to Mars moving out of the optimal imaging position, coming down with Bronchitis and starting to freeze through my layers of jumpers so I ended my session. The views I had I will definitely remember for a long time and I'm looking forward to the next Mars opposition since it'll be another 38% closer and again will move through the zenith visible from my location... now thinking about a 16" dob for those views!!! Thanks for reading, Mariusz
  12. From the album: Deep Sky Imaging

    This is a RGB image of the Tarantula Nebula taken with a 8" SCT at 2000mm. 12 x 5 mins Subs 5 x 10 mins subs 10 x 1 min subs all at ISO800
  13. From the album: Deep Sky Imaging

    This is a reprocessed image of the Sculptor Galaxy Data I captured and posted previously. During the week when I was imaging the Helix Nebula, I was exposing it when it was east of the meridian. So as it hit 15 degrees past the meridian and the meridian flip happened, there was no guide star in the OAG FOV so I had the option to pack up and continue imaging another day or try for another object and hope for a guide star. As the sculptor galaxy was close to the location I slewed to it (with favour western horizon selected in the CGEM settings) and to my joy when the sculptor galaxy was framed a 1/3rd of the frame to the edge there was a guide star in the OAG... WOO HOO :grin: ... and so a second object imaging continued. After getting 3 nights worth of ISO400 10 minute RGB subs, I found that after processing the image was very amber at best.. almost sepia... and no matter what I done to it it always looked too green or purple at certain parts... just didn't look right. When I eventually got a chance, I was going to image some pure blue subs to add to the image to correct for the amber look, but as luck would happen, forecast was for at least a week of clouds and rain... this week was no better BUT I did see a break in clouds the other day with a 3/4 FULL MOON!!!! :mad: I couldn't afford to let this opportunity go to waste so I imaged NGC253 through a Halpha filter to cut out the moon glow... remembering that when imaging through Halpha in the 40D there is a lot of data in red (of course) and about 30% as bright in the blue channel.... I thought that I could use that added to blue as well as add some halpha to red and perhaps reveal some nebulosity. I only managed 8 x 15 minute subs before clouds started coming and 4 out of those were usable.

    © Mariusz Goralski

  14. Hi All, I came across the knowledge of NGC1055 galaxy in Cetus by accident while looking at some Hubble images and thought that this Galaxy was possibly a rarely imaged object since I didn't see any images posted of it. Googling this galaxy there are a few amateur images, but still not as many as other galaxies or objects and seems very unpopular. This galaxy was not in my "Star Walk" app so I thought that perhaps its not in the simpler star map programs that people use? or due to the fat that it is quite faint... it is in Cartes Du Ciel and Star Map HD. Enough of my google babble, tech specs time... this was imaged using my NexStar 8SE on the CGEM mount at F10 (2032mm) through my unmodded DSLRs. I initially started imaging the galaxy using my Canon 7D to try to get a higher resolution but realised that the 7D is not only as sensitive as my 40D, modded or unmodded, but a 600 second sub heated up the sensor to 43 degrees as reported by APT. Surely this would generate more noise but I decided to allow the rest of this and next night to image using the 7D. I was curious about the difference between the sub quality between my 40D and 7D so I changed the DSLR used to the stock 40D and the difference was staggering... the 40D only heated up to 21-23 degrees, there was more of the galaxy visible in the 600 second sub but the subs had a noticeable less noise. Each night conditions were very similar, seeing, temperature etc, so I figure that the reason for higher sensitivity was the fact that the 40D has physically bigger pixels and so more photos hit each of the receptors... Total Exposure time was: 57 x 600 sec subs (20 subs through the 7D and 37 subs on the 40D) 23 x 150 sec subs (all 40D) 12 x 60 sec subs (all 40D) The galaxy was mid height in my northern sky and I always started imaging 10-15 degrees east of the meridian until sunrise, so I only really had about 3 hours per night of imaging it before the galaxy was obscured... that includes finding the guide star, calibrating and start the process which took about 30 minutes. It's not anywhere near the hubble image or most of the amateur images but I hope you like it, thanks for looking...
  15. Hi All, When I was waiting for the Tarantula to get into imaging position to grab som Ha and OIII subs to add to the posted image, I decided to do some unguided subs of 47Tuc glob... its only 15 x 60sec, 15 x 30sec and 15 x 10sec subs in ISO800 at F10 using a modded Canon 40D. Seeing wasn't the best but surprisingly the stars were round for being unguided. Thanks for looking, Mariusz
  16. From the album: Solar System Objects

    This is the first Saturn imaged since I moved. Seeing was above average, but not the best I have ever experienced. The most I could manage decent data is through a 2X barlow max.. 3X was staring to go a little soft. Imaged using Imaging Source 21au618 using standard R, G & B filters and a IR Cut filter through the 8SE on 29th May 2016. 3000 frames IR Cut Luma. 2000 frames R & G filters. 750 frames B filter. Used best 25% frames. Color balanced in PS.

    © Mariusz Goralski

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