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rotatux

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Everything posted by rotatux

  1. rotatux
    There's also the fact that with your SCT, the longer focal length makes imaging more sensitive to (bad) seeing, hence probably more difficult to focus. What focus technique do you use ? I recall you are software-based, but do you also use a bahtinov ? My f/4.5-5 130PDS is way easier to focus than my f/12 Mak, and long time since imaging with the latter but I remember using a bahtinov mask a few times and it was nice. Rather than boosting the green I would rather put in a bit less blue. Anyway I like both. It's a pity this target requires a long focal / SCT or MAK to get a big enough image, otherwise it's really nice. No clear sky here since end of december and still eager to try my new christmas 2" UHC filter on heavy LP. And as time passes, my targets are getting out of my (limited) sight
  2. rotatux

    Moon 20140211

    rotatux commented on happy-kat's gallery image in Member's Album

    Moon 20140211
    Is it luck ? You captured it at about maximum N-E libration, looking at Endymion crater position
  3. rotatux

    2013-06-30 lune2 / moon

    rotatux commented on rotatux's gallery image in Member's Album

    2013-06-30 lune2 / moon
    SGL has resized down the uploaded image (140K) contrary to most my other images. Tried to reupload with no change, impossible to store the original (only 840K). Strange. Just checked most my other images are reduced too. And seems same for other Member's Albums. Must be SGL policy, but didn't notice when reading
  4. rotatux

    2013-09-02 milkyway4

    rotatux posted a gallery image in Member's Album

    2013-09-02 milkyway4

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually. Note: handgrip of the photo head at the bottom right

    © Fabien COUTANT

  5. rotatux

    2013-09-02 milkyway3

    rotatux posted a gallery image in Member's Album

    2013-09-02 milkyway3

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually. Note: handgrip of the photo head at the bottom right

    © Fabien COUTANT

  6. rotatux

    2013-09-02 milkyway2

    rotatux posted a gallery image in Member's Album

    2013-09-02 milkyway2

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually. Note: handgrip of the photo head at the bottom right

    © Fabien COUTANT

  7. rotatux

    2013-09-02 milkyway1

    rotatux posted a gallery image in Member's Album

    2013-09-02 milkyway1

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually. Note: handgrip of the photo head at the bottom

    © Fabien COUTANT

  8. rotatux

    2013-09-02 andromeda2

    rotatux posted a gallery image in Member's Album

    2013-09-02 andromeda2

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually.

    © Fabien COUTANT

  9. rotatux

    2013-09-02 andromeda1

    rotatux posted a gallery image in Member's Album

    2013-09-02 andromeda1

    From the album: Barn door tracker (wide field)

    Capture: 1 x 120s x 400iso, auto dark, Canon SX110IS at 6mm (36mm FF) :2.8 on barn-door tracking manually.

    © Fabien COUTANT

  10. rotatux
    2013-08-15 pleiades M45

    From the album: Alt-Az / NoEQ DSO challenge

    Try at piggyback on the Mak+Altaz horse. Very difficult to focus dim subjects with those modern lens, real lack of luminosity despite perfect sharpness. Also seems to totally lack color (unless it's saturation). Capture: 1 x 30s x 2000iso, Olympus E-PM1 with M.Zuiko 40-150:4-5.6 at 120mm:7.1 on Celestron 127MAK on Nexstar SLT tracking Alt-Az. Place: near country 50km from Paris

    © Fabien COUTANT

  11. rotatux

    2013-08-04 m31

    rotatux posted a gallery image in Member's Album

    2013-08-04 m31

    From the album: Barn door tracker (wide field)

    Try barn-door at M31 with longer focal (supposedly not possible) Capture: 1 x 90s x 800iso, auto dark, Canon SX110IS at 34.9mm (210mm FF) :4 on barn-door tracking manually Processing: UFRaw, Gimp

    © Fabien COUTANT

  12. rotatux
    2013-08-04 altair+del+sag

    From the album: Barn door tracker (wide field)

    Altair, Delphinus, Sagitta, Aquila Capture: 1 x 90s x 400iso, no dark, Canon SX110IS at 8.2mm (50mm FF) : 3.1 on barn-door tracking manually and tripod. Processing: UFRaw, Gimp

    © Fabien COUTANT

  13. rotatux
    2013-06-30 lune2 / moon

    From the album: Moon, planets and single stars

    Try at moon imaging with the Mak Capture: 1 x 0.2s x 200iso, Olympus E-PM1 at Celestron 127MAK on Nexstar SLT, neodymium filter. Processing: UFRaw, ImageJ, Gimp Date: 2016-06-30 Place: suburbs 10km from Paris

    © Fabien COUTANT

  14. rotatux
    2013-01-17 jupiter (movie stack)

    From the album: Moon, planets and single stars

    Try at planetary imaging with Mak and projection. Capture: ~1600 frames of unknown exposure, Olympus E-PM1 projection through Skywatcher 20mm SWA eyepiece with Celestron 127MAK on Nexstar SLT Alt-Az, neodymium filter. Processing: ImageJ, Gimp Place: suburbs 10km from Paris

    © Fabien COUTANT

  15. rotatux
    2013-01-17 jupiter (jpeg frame)

    From the album: Moon, planets and single stars

    Try at planetary imaging with Mak and projection. Capture: unknown exposure, Olympus E-PM1 projection through Skywatcher 20mm SWA eyepiece with Celestron 127MAK on Nexstar SLT Alt-Az, neodymium filter. Place: suburbs 10km from Paris

    © Fabien COUTANT

  16. rotatux
    2013-01-16 orion m42 (1)

    From the album: Alt-Az / NoEQ DSO challenge

    First try at imaging from a novice, with a promising equipment but lacking stacking capacity. Capture: 2x15s+1x30s lights x 800iso, 2 darks, Olympus E-PM1 with Celestron 127MAK on Nexstar SLT tracking Alt-Az, neodymium filter. Processing: ImageJ, Gimp Date: 2013-01-16 Place: suburbs 10km from Paris, France

    © Fabien COUTANT

  17. rotatux

    2016-08-07 m45 (2)

    rotatux posted a gallery image in Member's Album

    2016-08-07 m45 (2)

    From the album: Other (Narrow field, DSO, EQ)

    M45, The Pleiades Capture: 19 lights x 30s x 2500iso, 8 darks, Olympus E-PM1 with Skywatcher 130PDS on Omegon EQ-300 tracking RA, no filter Processing: Regim 3.3, Fotoxx 12.01, Gimp 2.8 Date: 2016-08-07 Place: near country 50km from Paris

    © Fabien COUTANT

  18. rotatux

    2016-08-07 m31

    rotatux posted a gallery image in Member's Album

    2016-08-07 m31

    From the album: Other (Narrow field, DSO, EQ)

    M31, The Great Andromeda galaxy Capture: 18 lights x 30s x 1600iso, 8 darks, Olympus E-PM1 with Skywatcher 130PDS on Omegon EQ-300 tracking RA Processing: Regim 3.3, Fotoxx 12.01, Gimp 2.8 Date: 2016-08-07 Place: near country 50km from Paris

    © Fabien COUTANT

  19. rotatux
    2016-08-07 m13 amas hercules

    From the album: Other (Narrow field, DSO, EQ)

    M13, Hercules Great globular Cluster Capture: 6 lights x 15s x 1250iso, 4 darks, Olympus E-PM1 with Skywatcher 130PDS on Omegon EQ-300 tracking RA Processing: Regim 3.3, NetPbm, Gimp 2.8 Date: 2016-08-07 Place: near country 50km from Paris

    © Fabien COUTANT

  20. rotatux
    2016-08-07 double amas Persée / Perseus double cluster

    From the album: Other (Narrow field, DSO, EQ)

    Perseus double open cluster: NGC 864 / NGC 884 Capture: 21 lights x 15s x 1250iso, 8 darks, Olympus E-PM1 with Skywatcher 130PDS on Omegon EQ-300 tracking RA Processing: Regim 3.3, ImageJ 1.49, Gimp 2.8 Date: 2016-08-07 Place: near country 50km from Paris

    © Fabien COUTANT

  21. rotatux

    2016-08-07 m31

    rotatux posted a gallery image in Member's Album

    2016-08-07 m31

    From the album: Wide-field (not barn-door)

    (oops sorry, image was added to wrong album and no delete available)
  22. rotatux
    2016-08-07 m13 amas hercules

    From the album: Wide-field (not barn-door)

    (oops sorry, image was added to wrong album and no delete available)
  23. rotatux
    2016-08-07 double amas Persée / Perseus double cluster

    From the album: Wide-field (not barn-door)

    (oops sorry, image was added to wrong album and no delete available)
  24. rotatux

    2016-08-07 m45 (2)

    rotatux posted a gallery image in Member's Album

    2016-08-07 m45 (2)

    From the album: Wide-field (not barn-door)

    (oops sorry, image was added to wrong album and no delete available)
  25. rotatux
    2016-09-08 orion ceinture et épée / orion belt and sword

    From the album: Wide-field (not barn-door)

    Orion Belt and Sword - M42 (Great Orion nebula), M43 (De Mairan nebula), NGC1977 (Running man nebula), NGC2024 (Flame nebula), IC434 (Horse head nebula) Capture: 24 lights x 60s x 2500iso, 8 darks, Olympus E-PM1 with Pentacon 135mm/2.8 (short) @4 on Omegon EQ-300 tracking RA, neodymium filter Processing: Regim 3.3, Fotoxx 12.01, Gimp 2.8 Date: 2016-09-08 Place: Deep country 26km from Limoges, France

    © Fabien COUTANT

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