The observation of Crescent on Dzulhijjah in Indonesia was done on August 22, 2017. at that time I obseved in Condrodipo Hill, Gresik, Indonesia. This place is a very special, why is it like that? because in this place there are often reports that the crescent is seen, although in other places not seen. It is also happening on the Crescent observation at Dzulhijjah 1438 yesterday. Hilal was successfully viewed by 5 people. 5 people are not including me, because I have never seen a Crescent before. Indeed, I feel seeing the Crescent vaguely, but I am not sure about it. so I decided to believe that I did not see.
5 successful observations in the condrodipo were performed with the naked eye, observations using cameras, telescopes, binoculars and theodolites failed to occur. I am confused with it. why so, theoretically it is impossible to happen, the limited view of the eye can overpower by the view of very sophisticated optical devices.
Before going home, I tried to ask for the image from the camera that connected to the telescope and I got 38 photos of the recording result when the hilal observation. The photoa are taken with the same settings, JPEG format, ISO 1600, Exposure 1/5" and f/3.5.
I spent days trying to observe by enlarging the photographs, observing point by point, line by line, angular by angle but no results.
Then I have the initiative to edit the photo in photoshop. I set its contrast, its black and white, its exposure and I succeed to do it.
Below, the results of the edited image:
Of these results there are still irregularities, why the position of the Crescent at 17:50 higher than at 17:46? My hypothesis, this happens because the telescope setting is still using Sun Speedrate, not using Lunar Speedrate.
The Crescent above is very difficult to see and edit, because several factors of the wrong arrangement. in the photo is not supposed to wear high ISO, it is better to use low ISO with long Exposure. And the format of the image is also better using the RAW format for easy editing and searching, not the JPEG format.
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| Crescent Capture |
Before going home, I tried to ask for the image from the camera that connected to the telescope and I got 38 photos of the recording result when the hilal observation. The photoa are taken with the same settings, JPEG format, ISO 1600, Exposure 1/5" and f/3.5.
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| Cresent Observation Image at 17:46 UTC +7 |
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| Cresent Observation Image at 17:50 UTC |
I spent days trying to observe by enlarging the photographs, observing point by point, line by line, angular by angle but no results.
Then I have the initiative to edit the photo in photoshop. I set its contrast, its black and white, its exposure and I succeed to do it.
Below, the results of the edited image:
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| Pointing Crescent Image Result at 17:46 UTC+7 |
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| The Crescent Image Result at 17:46 UTC +7 |
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| Pointing Crescent Image Result at 17:46 UTC+7 |
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| The Crescent Image Result at 17:50 UTC +7 |
Of these results there are still irregularities, why the position of the Crescent at 17:50 higher than at 17:46? My hypothesis, this happens because the telescope setting is still using Sun Speedrate, not using Lunar Speedrate.
The Crescent above is very difficult to see and edit, because several factors of the wrong arrangement. in the photo is not supposed to wear high ISO, it is better to use low ISO with long Exposure. And the format of the image is also better using the RAW format for easy editing and searching, not the JPEG format.
