National Astronomical Research Institute Revealing astronomical photos made by Thai people “Banana Squid-Flying Bat Nebula” points out that it is difficult to photograph because it can only be seen during the rainy season.
The National Astronomical Research Institute or ASTRO revealed the image via Facebook. Revealing photos of nebulae made by Thai people. Photographed by Ms. Wachira Thomas and received the first prize. 2023 Astronomy Photography Contest, Deep Sky Objects Category
The image of the nebula includes: “Flying Bat Nebula” and “Banana Squid Nebula” which are nebulae that are rarely seen. Because it can be seen during the rainy season in Thailand. Make the sky not clear Hard to notice
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The Dr. revealed that Mr. Wachira took the said photo on June 23. Sung Men District, Phrae Province, using a ZWO ASI2600mc-pro camera, WO Redcat51 lens, aperture size 51 millimeters, focal length 250 millimeters, focal length ratio f/4.9 and setting the light sensitivity or ISO at 100.
The Dr. Sor. stated that the large red hydrogen gas cloud in the image is the area of the “Flying Bat Nebula” or Sh2-129, an emission nebula located in the constellation Cepius. It is about 2,300 light years away from Earth, which hides another nebula inside, namely the “Banana Squid Nebula” or OU4. Its distinctive feature is that the light emitted is bluish-green. which is caused by the breakdown of oxygen gas It creates beautiful contrasting colors.
These two nebulae It was only discovered in June 2011 by French astrophotographer Nicholas Outers. which the light of this nebula It is caused by receiving enormous energy from a massive star named HR 8119 or HD 202214 that appears brightly near the center of the nebula.
Dr. Sod. reveals the challenges of taking this photo: The two nebulae It can only be observed during the rainy season in Thailand. Therefore there is very little opportunity to record images. Due to unfavorable sky conditions In addition, the Banana Ink Nebula emits very faint radiation. Images must be recorded only through the Oiii filter, thus requiring the accumulation of image signals for a long time. so that it appears clearly blue-green
In addition, it is stated that Mr. Wachira took 2 sets of photos: Set 1 used an Optolong L-eXtreme filter to get the signal in the hydrogen alpha range with Oiii for 50 hours, while the second set used an IDAS D1 filter to collect light. of other stars for 20 hours, totaling more than 70 hours. Then it was processed with a program to get the most details.
Compiled from NARIT National Astronomical Research Institute
Picture from NARIT National Astronomical Research Institute
