CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
Hi,
I took a few shots at the Full Moon using my Canon 450D + EFS 55-250mm during the Penumbral Lunar Eclipse. I discovered the last of the 3 Moon shots I took outside Funan DigitaLife Mall got something interesting in the Moon. Below is the 100% crop of the image with some sharpening and level adjusting:
Not sure what is the black round object, but it look like a balloon to me.
Have a nice day.
Yang Weixing "The universe is composed mainly of hydrogen and ignorance."
Is the object at the same position in all 3 shots? What was your timing between the 3 shots?
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Black dot - too big? for satellite transit though. ( check cal-sky if you want)
I was doing similar in woodlands and saw from the LCD black dot across the round moon perhaps bird in my case
Bat or airplane? Nah... I want a star shaped intergalactic cruiser with blue and orange lights pulsating through the hull!
[80% Steve, 20% Alfred] ------- Probability of Clear Skies = (Age of newest equipment in days) / [(Number of observers) * (Total Aperture of all telescopes present in mm)]
Tachyon wrote:Is the object at the same position in all 3 shots? What was your timing between the 3 shots?
The interval are around 10s and the first two shots don't have any black dot... only the last one had.
Clifford60 wrote:dirt on the sensor?
I was shooting at f5.6 and the black dot only appear in this shot... also the black dot is too sharp and too black to be the shadow of dust.
Anyway, I do a little calculation (hope my maths are correct) and find out that if a 25cm diameter balloon to had the same angular size of the black dot, it'll only need to be at around 1.57km away. The Moon during the time was around 38.5 degree above horizon, so the "balloon" will be only less than 1 km above horizon. Since the location was at city hall and it's quite common that some of those helium filled balloon got loose and fly away, so I think it was likely to be a balloon.
Have a nice day.
Yang Weixing "The universe is composed mainly of hydrogen and ignorance."