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Found 7 results

  1. From the album: Deep Sky Imaging

    This is a 7 hour exposure of the M74 galaxy using a astro full specturm modded Canon 40D DSLR through a IR Cut filter. The image is taken with a Celestron 8" SCT at F6.3 through a focal reducer(1280mm focal length). The image consists of mostly 450s subs and approximately 1 hours of 120s subs, all at ISO 800. This galaxy is located at about 30 Million Light years distance from us, at for a magnitude 10 object it did seem like quite a faint object to image, this could be due to the it's low altitude throughout the whole exposure and a little bit of city light pollution in that part of the sky.
  2. Another Messier object ticked off the list. This one is M74, a beautiful spiral galaxy imaged from Kelvedon Common in Essex which is a great site for astronomy with lovely dark skies, hundreds of stars, and the Milky Way visible overhead. Other highlights of the night were numerous meteors (I lost count of how many I saw), a possible Iridium flair (or maybe just another meteor), and good naked eye views of the Pleiades, Orion's Sword and Andromeda Galaxy (just about). Unfortunately guiding problems meant that most of the frames captured had to be junked so this image is made from the best, or rather least worst, 9 frames. Normally I'd throw these away but it's such a rare treat to get to a good dark sky site on a clear night with no moon that I kept them knowing that the stars would be a bit streaky - and they are...but the galaxy came out well. 09 x 8 minute exposures at 400 ISO (1 hour and 12 minutes) 27 x dark frames 20 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Captured with APT Guided with PHD2 Processed in Nebulosity, Maxim DL, and Photoshop Equipment: Celestron NexStar 127 SLT Skywatcher EQ5 Mount Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  3. After an interrupted Friday session and haze and light cloud denying me yesterday, the sky finally let me play this evening. Thankfully I have Monday to recover. While the scope cooled, I had half an hour or more with the binoculars testing the sky with a tour of some old friends. M15 was still impressive, M2 began to dissappear into the Southwestern haze but was just about detectable, as was M71 in Sagitta. The cluster tour took me around M34, M29, M39, M103, NGC 663, M52, NGC 7789 (Caroline's Rose), M45 (the Pleiades), M36, M37, M38, the Hyades and NGC 869 / NGC 884 (the Double Cluster). Additionally, I could just pick out M81 and M82 in the North, M33 was the best I can remember in binoculars and both M31 and M32 in Andromeda could be seen together. Sadly M30 had dissappeared behind next door's roof. I think I missed it by less than 10 minutes. "Good start despite this" I thought. With the scope now ready for action, I returned to spend a bit more time looking at NGC 404 (the Ghost of Mirach) and by using the 8mm X-cel could separate the star glow from the galaxy, which I found easier to pick up compared to my first sighting. Quite condensed and an easy averted vision object. I then moved towards the Northeast of Pegasus to have another go at finding Comet Hergenrother. From pointing the scope with the finder, my first view through the 15mm eyepiece showed the comet, slap bang in the middle of my FOV. What luck! I made a sketch for proof of identification (my first), which I will attach to this thread later. It was easy with averted vision near to 79 Pegasi and could occasionally be seen directly. Slightly lop-sided perhaps. I then returned to another failure from the past week, namely NGC 7814 (Caldwell 43). I nearly missed it again but then worked out that I was looking at an asterism very nearby and similar to the one which eventually got me there. The galaxy was a diffuse, oval but reasonably easy to see. Seeing as M33 was a binocular object, I had a crack at M74 which although much feinter, is of similar surface brightness. Easy to find, I managed to tease out a large circular soft ghostly glow. I was very happy with this as I have failed to see it on a number of occasions. I then moved onto to two very different galaxies in Casseopeia. NGC 278 was small, condensed and just about visible directly, though averted vision made it easier. I thought it looked a bit like a planetary nebula. NGC 185 (Caldwell 18) was very close by and was a much larger wide oval, similar in appearance to M74. Moving into Perseus, I managed to find the galaxy NGC 1161. This appeared as a glow around an 8th magnitude double star, only just detectable. The companion NGC 1160 was out of reach. Another difficult galaxy was NGC 890 in Triangulum. It was easy to locate but only appeared as a very soft glow in averted vision. The final galaxy of the night was another diffuse and quite large galaxy, this time in Aries. NGC 772 looked like a smaller flatter version of M74. With Taurus and Gemini rising rapidly, I turned my attention onto finding Asteroids. 4 - Vesta was first, though an inaccuracy in CdC left me confused. Thankfully I also have Stellarium which represented exactly the relative position of the rock. Nearby in Gemini, 1 - Ceres was very easy to locate next to a similar magnitude star near the magnitude 6.5 HR 2190, beyond Eta Geminorum. By the time I called it a night, I could see all the principal Ursa Minor stars, despite all being below Polaris. The Double cluster was a naked eye object too. Now that's what I call a whole heap of fun: One comet, seven new galaxies and a couple of Asteroids. I am tired though!!! __________________________________________________ ______ Observing Session: Sunday / Monday 14th / 15th October 2012, 22:10 hrs to 01:30 hrs BST VLM at Zenith: 5.2 New - Revisited - Failed
  4. http://www.rochesterastronomy.org/supernova.html#2017ahk unconfirmed at this time... pictures are not too clear just like M74 ! found some stuff on CN http://www.cloudynights.com/topic/566129-might-be-a-sn-in-m74/
  5. 10-11-12. looked nice and clear tonight so let the scope cool for an hour and went out around 9 o clock. i went straight for m74 as its eluded me thus far and thought the sky looked decent enough to give it a blast. i tried for about 20 mins with no luck.so i had a go at m33. now she was as good as id ever seen her.the core was visible quite easily with direct vision,but the difference this time out was i could see slightly more of its glow with averted vision, quite impressive. as m33 was favourable i thought id have a look at m31. again it was best view id had to date of this monster galaxy .before now there was a fair sized gap between m31 and m32 ,but tonight the extent i could make out meant there was only a small gap from the edge of the glow to the fuzzy m32. with that i decided to go back to have another go at m74. this time i was successful . it was very faint indeed and i had to keep tapping the tube of the ota and use perifial vision to pick it up. at x66 i had best view,x100 i could make out a ghostly grey with two faint stars to the eastern edge. i was looking foward to a few more hours viewing ,but as per norm,the clouds started to close in and dew was quite bad. so i just had time to slew over to jupiter which was a nice view as ive not looked at this king of the planets for a long while. x171 gave exellent detail of the banding around the planet. dissapointed to have to pack up early but i managed to knock a messier off my list,even if the detail was little more than a small grey faint cloud !
  6. Hi All, After discovering that my first imaging session of Galaxy M74 on the pier in the obsy was slightly out of focus, I decided to give it a bit more time, this time double checking the focus. I figured that since I already had the OAG setup with the DSLR on the scope, I might as well try to get more data of this Galaxy. The moon is at 1st quarter so I won't be doing any DSO until around new moon. This was taken with a full spectrum modded Canon 40D on Nexstar 8SE on a CGEM mount at F6.3. 55 x 450sec and 11 x 210 sec at ISO800. All RGB through a IR cut filter. Thanks for looking, clear skies. Mars
  7. Hello Lovers of Astronomy, Finally I have had a chance to return to imaging. This is the first image taken from my Recently built home obsy - AKA Lil'Astro Barn. :-) M74, 21x 450s ISO800 subs. I noticed that my focus was not 100% this morning, when 14 out of the 21 subs were captured and I thought that it might be a bit bigger. Its not perfect but it's my return to astroimaging and it's better than my first M74 from 2012. I'll add some more data and Halpha to the image if I get a chance. Clear skies.
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