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About VilleM

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    Star Forming

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    Here is mine. 6" f/2.8 Boren Simon newtonian on HEQ5, ASI1600MM-C, Starlight Xpress 5x2" filterwheel with LRGB / or narrowband filters, focusing done with USB focus V3. Guiding with 50mm finder and ASI120MM. As allsky camera I use ASI120MC which you can see on the left inside the plastic dome. On the right, aluminium box that contains remote-controllable flat field panel. The telescope is remote-controlled from indoors, only thing I need to do manually is open the roof and hook up batteries since I dont have electricity here (except generator to charge laptops and run working-lights if needed).
  2. Hi skybadger, its V0416 UMa. Approx. 14-15 magnitude, its close to Mizar. You can see more information on AAVSO website: http://www.aavso.org/vsx/index.php?view=detail.top&oid=159294
  3. Thank you! Im still learning photometry, but results are starting to get better. I wish I could somehow make rough estimate of the asteroids shape based on the light curve. Maybe some day Ill figure out how.
  4. Hi, after almost 2 months of clouds there was finally a clear night in sight. I made most of it, imaging until clouds rolled in about 4 in the morning. I shot these using two telescopes at Taurus Hill Observatory. Its fun to operate two at the same time, luckily its possible from indoors. Ill also attach here light curve of variable star V0416 UMa that I made during the same night with C14 and SBIG ST-8 on Paramount ME mark II. Other images are taken with 16" f/8 Meade SCT and SBIG STT8300M on Paramount ME mark I. Im expecially happy with Dembowska, I tried to get complete light curve twice in 2017 but clouds or fog always ruined my photometry. Milkyway was also beautiful as always, I spent some time outdoors just looking at it while telescopes clicked more subs. Worth every second in the cold, windy night!
  5. Hi! Does anyone here use ASI174 for all sky camera - what lens youre using? Im planning to install one I have (174MM-C) on my balcony, but I cant find suitable lens for it. I tried the one that comes with ASI120, but sensor is too deep in the camera to reach focus at infinity. I do have adapter to mount Canon EF or M42 lenses to my camera, however I would like to use physically smaller lens - Im looking for wide angle or fisheye. It doesnt have to cover all sky since my view is very limited (approx FoV 45 degrees horizontal and 80 degrees vertical). Do any of the C or CS mount lenses focus at infinity with my camera? Backfocus distance is approx. 17.5mm.
  6. M33 - reprocess

    Hi, I reprocessed some old data captured 2.10.2016 using new arcsinhStretch in PixInSight. I have some h-alpha data too, but for this version I only used LRGB to avoid reddish hue that I cant get rid of if I use my H-alpha too to blend in with my red channel. L 23x180s + R/G/B 7x180s, total exposure time 132 minutes. C&C welcome.
  7. Cooling issues ASI1600 MM-C

    Your ambient temperature is too hing for your camera. Try cooling it less (use max 80-90% of the power to make sure it has some power to spare if ambient temperature rises). Camera is supposed to get hot, heat from the sensor has to go somewhere.
  8. Tuiskula observatory

    Imaging season has started for autumn 2017! Here is first images taken last night. Also I took quick milkyway picture with dslr and 8mm samyang. No tracking or anything special, there is some light pollution in the horizon but otherwise looking good. Little under 2 hours of exposure time on both images (34x180s and 36x180s). For IC1318 I wouldnt have needed so much, but I didnt have any other targets for that night. More exposure time certainly wont hurt though. -V
  9. Hickson Compact Groups

    Thank you barkis! Sketching for me is good way to make myself look in the eyepiece much longer than usually, teasing out substle details I might miss if I just take quick look. Of course its also useful for seeing what objects they actually were after Ive sketched them. This scope reveals alot of galaxies. Expecially in Virgo / Leo region so "plate-solving" using stellarium or TheSkyX is necessary afterwards. Unfortunately scope isnt mine, but Ive had plenty of opportunities to use it during amateur astronomy meetings. Yes you did get my name right. I hope I can sketch more Hickson Compact Groups in the future.
  10. Hickson Compact Groups

    Hi! I observed these last weekend during Ursa Astronomical Association meeting in Tähtikallio Observatory, Finland. Fantastic weather, 3 nights of clear skies and good transparency. Milkyway was bright from horizon to horizon, a lovely sight! Unfortunately the scope didnt co-operate, on the first night declination axis popped 4 teeth from the gears so I had to move scope without goto. Its very difficult because the scope is so big and bulky. I need a ladder to reach the finders too! Also the dome didnt open on the last clear night, clutch slipped out of place but we managed to fix it before astronomical darkness. I observed HCG 10, HCG 93 and HCG 94. Now Ive observed 4 of these in total (HCG 92 last spring), very faint but intresting objects to see. Clear skies!
  11. Hi! This is from last night. Taken at Taurus Hill Observatory, Finland. Florence is still quite bright but relative speed to background stars has slowed down alot as the asteroid moves away from Earth. Perioid seems to be approx. 2,4 hours. In the second image I stacked 1 hour of 60s sub-exposures to show movement of the asteroid.
  12. Recent images from THO

    Thank you, yes I think someone is trying to type their name. I guess some of the letters are backwards? Heh.
  13. Hi, summer is finally over and I started autumn imaging season with mostly planetary nebulas and hydrogen regions. These are all taken during four nights at Taurus Hill Observatory. Also I measured light curve of UX UMa, a cataclysmic variable star in Ursa Major and took some snapshots of few comets, C/2017 O1 and C/2016 ER61. For deep sky objects I used Meade 16" f/8 SCT and SBIG STT8300M on Paramount ME mark I. For light curve of UX UMa and comets I used Celestron C14 with 0.5x reducer and SBIG ST-8 on Paramount ME mark II. Also seeing was very good all the time (star size approx 1.8-2") and guiding worked perfectly on Meade. On the celestron the guider didnt fire up at all, fortunately objects stayed in the FoV easily. But I was limited to 120s subs. Here is timelapse taken few days ago. Plenty (ehm, four, including me..) of amateur astronomers buzzing in the moonlight. I also saw Bishop's ring, first for me!
  14. Used KAF-8300 or new ASI 1600MM-Cool?

    Good choice! Clear skies for new camera!
  15. 8 hours?! If I were you I would buy laser collimator. I bought Farpoint 2" laser and I can collimate my scope (f/4 with reducer to make it f/2.8) in about a minute... Your focused image is unsharp, also your spider veins arent symmetrical, up and down spikes are off. When focusing on bright star you can see spider veins create diffraction pattern? That can be used as "bahtinov mask" to aid in focusing correctly. Also I can tell just by looking at the unsharp stars in your "focused" image that bottom left corner is going to have weird stars once you get it focused. Once you have proper tools and done it correctly once youll see collimation is very simple. I took apart my newtonian totally and after cleaning everything and putting it back together collimation was mile (or two) off. I inserted laser, aligned secondary, then replaced laser with cheshire and aligned primary and then lock it with locking screws. Very simple and doesnt take long to do.