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Petar b

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About Petar b

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    Zagreb, Croatia
  1. Petar b

    Detecting exoplanet

    How accurate is this site: https://astro.swarthmore.edu/print_transits.cgi?observatory_string=Specified_Lat_Long&use_utc=0&observatory_latitude=32.5413&observatory_longitude=-105&timezone=MST7MDT&start_date=today&days_to_print=28&days_in_past=0&minimum_start_elevation=+&and_vs_or=or&minimum_end_elevation=+&minimum_depth=25&target_string=&single_object=0&ra=&dec=&epoch=&period=&duration=&target=&show_ephemeris=0&print_html=1&twilight=-12&max_airmass=2.4
  2. Petar b

    Detecting exoplanet

    One question do stars need to be in focus?
  3. Petar b

    Detecting exoplanet

    Here is some of the information. I used the T21. Filter: V, for the clouds and the seeing I don't know I forgot to check the forecast, but it was clear if that means anything. I can't change the gain of the camera. And the image was a little bit out of focus. In the files, you will find 15sec (6 images), 30sec (5 images) and 60sec (5 images) fits files. Archive.zip
  4. Petar b

    Detecting exoplanet

    It is the highest pixel value. For 30 seconds it is 6357
  5. Petar b

    Detecting exoplanet

    I took some test images with the T21 and these are the averages of the star are: for 15s: 3000-4000 median value, for 30s: 5000 median value and for 60s: 7000 median value.
  6. Petar b

    Detecting exoplanet

    The T5 sounds tempting because with that telescope I could maybe detect 2 transits in multiple nights because it is less expensive. Could I measure the full well depth of a star in a picture? So that I know what exposure to use. And how accurate are these predictions: https://astro.swarthmore.edu/print_transits.cgi?observatory_string=Specified_Lat_Long&use_utc=0&observatory_latitude=32.5413&observatory_longitude=-105&timezone=MST7MDT&start_date=today&days_to_print=28&days_in_past=0&minimum_start_elevation=+&and_vs_or=or&minimum_end_elevation=+&minimum_depth=25&target_string=&single_object=0&ra=&dec=&epoch=&period=&duration=&target=&show_ephemeris=0&print_html=1&twilight=-12&max_airmass=2.4
  7. Petar b

    Detecting exoplanet

    That's what I thought. First I would do a 15min trail run and test what would be the best exposure. Maybe even 30min run to try capturing the beginning or the end of the transit.
  8. Petar b

    Detecting exoplanet

    Technically you can but it is a little bit complicated. To see my field of view I would use this website: https://dso-browser.com/deep-sky/object/859/pleiades/m-45/bright-nebula?itelescope_mpc_code=H06&date=2018-12-01. You can change the camera angle and what telescope you are using. I've used it before and half of the time the guider wasn't working.
  9. Petar b

    Detecting exoplanet

    I already paid so I have no choice but to use them. The gear I have is an 80mm ed that is currently being repaired and a DSLR (Canon EOS 700D). I think I am going to use the T21, and I will try to detect WASP-52 b.
  10. Did you select the winners?
  11. Petar b

    Detecting exoplanet

    I could image around 2-3h max.
  12. Could anyone tell me what exposure length I should use and what filter I should use when detecting an exoplanet. I was planning to take pictures with T17(http://support.itelescope.net/support/solutions/articles/231915-telescope-17) or T21 (http://support.itelescope.net/support/solutions/articles/231906-telescope-21)using the iTelescope service. And which one is better?
  13. Petar b

    Starlight Express SXVF-M8C buy used?

    Forgot to mention that I am using an Explore Scientific ED80(focal length is 480mm)
  14. Is it worth to buy Starlight Express SXVF-M8C used for around 210 gbp. Or should I save up for a new CCD? I currently use unmodified Canon EOS 700D.
  15. Petar b

    Eq2, Ts super plossl 6mm

    Weight is around 9kg.

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