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Showing results for tags 'cgem'.
Found 19 results
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From the album: Deep Sky Imaging
This is a 10 hour exposure of the NGC1055 galaxy using a standard Canon DSLR. The image is taken with a Celestron 8" SCT at F10 (2032mm focal length). The image consists of mostly 600s subs and approximately 2 hours of 90-150s subs, all at ISO 800. This galaxy is located at about 60 Million Light years distance from us, and at a magnitude of 12.5 is quite a faint object to image, especially when there is a little bit of light pollution with in the par of the sky it is imaged at... Looking at the result, I probably should have used the f6.3 FR to have less over sampling and most likel -
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 -
Hello Astronomers, I have some sad news, sad for me anyway, but unfortunately during the final night of imaging my last DSO, the Fighting Dragons in Ara, my CGEM blew up. At about 4 am, I went outside to check on the imaging progress and decided to dim the laptop screen but accidentally hit the "sleep" button instead of the "DIM" button. Usually this shouldn't be a problem.... but when I "woke" the computer up, the CGEM stopped tracking. Not thinking like it's a big deal, I tried to re-center the object and guide star and this is when I realized that there is something seriously wron
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This was bought new back in 2014. It was used for a short time in our observatory before we decided to get a Mesu 200 in late 2015. Following that, it received little use – we would occasionally get it out for visual work. Further purchases have meant that the CGEM is now not being used at all, and it is time to shift it on. The CGEM is, in most respects, equivalent to an EQ6, although you should be aware that it cannot be used with EQMOD. It comes with the original tripod and a 17 lb counterweight (as shown in the photo). It comes with the 12V cigar plug power cable. • Payload -
Just a quick heads up for all CGEM users... Celestron has released version 6.51 firmware update. So if you have been missing the PEC capability of your mount, this update is meant to fix the PEC problem where the CGEM was not accepting any PEC program, communicating with PECtools (or any PEC software) nor recorded any corrections. Clear Skies.
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Hi All, Now that my observatory is finished, I wanted to do a as accurate polar alignment as I humanly could do for my Astro Imaging and so started a adventure. I ended up getting a decent polar alignment after a few tries using different methods and wanted to share my results for anyone out there who needs help in polar aligning their EQ mount with the simplest instructions I can put to words. I want to start by saying that unfortunately it is time consuming and there is NO SHORT CUT if you want accurate PA. The more time you spend on it the more accurate your scope will be al -
Hello Astrophotographers, Now that I have my CGEM on a permanent pier, I figured that I should get much better accuracy in guiding quality, especially at 2032mm (F10) focal length on my 8" SCT. I spent a bit of time getting guiding results that are at the very least acceptable and thought I’d share my experience with anyone who is looking for info on PHD autoguiding. In the pasten setting up for each astro session and using PHD I was generally getting RMS about 2.2-2.6ish and after stacking and processing, the soft effects were able to be negated to a great point, revealing deta
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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 bab
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Following on from Flo's post about the new CGX and CGEM II mounts with the leg heigh adjustment locking levers being put on the inside of the legs, I had a look at my old CGEM mount and found that by undoing the four grub screws that hold the leg adjustment collar with the locking levers, I could rotate them so that the locking levers are on the inside as with the new mounts. This will save the skirting boards from being marked in the room where I store my mount and avoid any possible 'trip hazard' when observing. Not sure why this one has come out on its side?!? It was saved in por
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Hi Astronomers... I decided that after modding my 40D, in the last few years taking a few long exposure images successfully with the modded DSLR even up to 45min (30 mins usually) subs at 2000mm with all subs usable unless clouds ruined the exposure. Lately I thought I'd tackle a new challenge, that challenge being PEC training on the CGEM to see if I can improve the tracking quality (RMS in PHD) and in turn tighten the star bloat a bit and improve the detail, particularly imaging at F10. Currently my attempts failed miserably. Initially I learned the hard way that you can not t
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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
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hi all, been a while since i was on here (thanks to renos and moving to new home). Getting excited to start getting into observing and imaging again but prior to that been looking into PEC. Does anyone have detailed steps on how to properly do PEC (especially using PEC Tool) for a CGEM? Also does PEC have to be done before every object you image or is it a once off things that once you upload to the CGEM its permanently sorted? I am reading celestron blogs, documents and experiments people have undertaken that PEC should only be done before you image an object and it w
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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 n
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Hello Astronomers, 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... WO
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Hey guys, After months of clouds and rains finally they are parting and clear skies can be seen. Now I am hoping you guys can assist me, i am after a illuminated polar scope for a CGEM mount, so far have only found polar scopes without illumination which doesn't help much (still makes it difficult when aligning). Anyone got any advice or products they can recommend?
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Well I've had three good, clear night's here and dry days so I was able to leave my mount hibernated to cut down on set-up time (wish I had an Obsy!) I don't have much worthwhile data to show for my efforts but I've done a lot of sorting out. I can now get reasonable results guiding with my OAG at 2800mm which has been a bit of a challenge but I'm happy with where I am. My images were really noisey though - bad enough to be obscuring the target and I wasn't sure if it was because the setpoint cooling was only getting down to -20 C (usually go to -25 C in winter and this is my first summer ima
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Hi all here's my odd thought,balance now I balance the sct with the weights facing east and the scope on the left facing west But when I image the moon or Jupiter the position of the weights is over to the west and the tube is on the right facing east , So should I balance the scope with the weighs to the west ,has that's the side they will be on when I do image with a dnk21 camera tracking and PA are very good ,align master, Pat
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Yesterday I set my system up for a practice run for Fridays eclipse. When I powered up my mount the hand controller was displaying 'Transmit Data...'. No matter what I tried I couldn't get the hand controller back to the start-up alignment procedure. After messing about for a bit the Sun dropped below our garage so I packed up and bought the mount inside and ran HCupdate. I selected the latest firmware version and programmed the hand controller. I then cycled the power on the mount and verified the copy. This came back as a match. I then ran MCupdate and again selected the latest version and p
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I decided a couple months ago that i am going to upgrade to an EQ mount. I am currently imaging with an Astrotrac but as much as i like it, i have outgrown it and am wanting to move onto building up a proper imaging rig. My plan is to buy a mount within the next couple of months and use my DSLR and 200mm lens for imaging until next year when i will be adding a scope to it, or i may even buy an autoguider before that. I want the mount to be reasonable, meaning i want it to be decent with enough features and payload capacity that i won't have to upgrade it for at least a couple of years. I have
