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Alfredo Beltran

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About Alfredo Beltran

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    Star Forming

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    Bogotá, Colombia
  1. Good! How does it perform now? Id like to buy one to use with my C925 EdgeHD and hyperstar (f2.3), for RGB and narrow band (yes with an OSC since I’ve done it successfully with that combo and the DSLR). It can be done drizzling the es channel. Alfredo
  2. Very, very nice image of the Iris Richard. Congratulations. I think the very low read noise and dark current of CMOS sensors let OSC Astro cameras to perform at very high levels now. The details in the dust are amazing. Is your camera the Pro version? Regards, Alfredo
  3. Hi Before the end of the year I want to share with you this image of IC 1848, also known as the Soul Nebula in Cassiopeia. I took this image in RGB with the IDAS D1 filter in RGB and the Baader Ha 7nm filter to enhance the nebula in the red channel. Total exposure was 5hr 16 min at f2.3 with a modified Canon T1i on a hyperstar lens and a C925 EdgeHD. Of that time, 2 hr 25 min (29 x 5 min) at ISO 1600 were for Ha, and 1 hr 51 min (57 x 3 min) at ISO 800 for the RGB image. Mount is an iOptron CEM60. Captured in SGP and completelly processed with Pixinsight. IC 1848 on Flickr Happy new year to you all! Best regards, Alfredo
  4. Adam I measured the parameters for my camera and published here, based on Craig Stark's article . For use it at f10, or narrow band, I've found the less read noise helps quite a lot. More than ISO 800. Regards, Alfredo
  5. Thank you very much Adam In fact I use ISO 1600 for narrow band at f2.3 or RGB at f10, because I've found it is the sweet spot because of the low read noise. For rgb at f2.3 I use ISO 800. Alfredo
  6. Thank you Ouroboros. Not really. It was because ISO 1600 has the less read noise for my camera, and thus I chose it to get the most possible detail on the image. Alfredo
  7. Thank you Mark Indeed we have sighting opportunities for both hemispheres. Alfredo
  8. Thank you Rodd. The C11 will be more than capable at f10. Worth to try. Regards Alfredo
  9. Thanks! Thank you. Fortunately, for us here it passes really near the zenith, and is easier to image. The most northern objects are very difficult from here since we are at just 4.8 degrees north. Thanks indeed, Patrick. Alfredo
  10. Thank you all for your encouraging comments! It was a nice galaxy to image and, because of its size, I opted for f10 to give it a more starring role on the FOV. I've found that the key is to do the maximum dithering possible during capture win SGP and collect all of the calibration files on the next few days at most. Pixinsight is also a wonderful tool to do the full processing since it lets to pull every single detail of the image. Alfredo
  11. Hi I want to share with you my latest image. It is the Sombrero Galaxy - M104. I took it from the terrace of my house on the suburban area of Bogotá, Colombia (8 million people city) with a Modified Canon T1i and an IDAS LPS D1 filter. Telescope is a C925 EdgeHD at f10 on a CEM60 mount. Total exposure time is 8.5 hr at ISO 1600. Pre and postprocessed entirely with Pixinsight. Captured with Sequence Generator Pro - SGP. Thanks for looking! Alfredo Link to full resolution M104 image on Flickr
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