From what you see from the left, the Moon is not in a bright yellow tone. Instead, it is shown in sulphur wavelength. (I’m not sure about it, can anyone check it for me?) I am quite sure that the substances in the hazes made it. If you are my loyal reader, you are sure to figure out that these hazes are caused by the Indonesian farmers. They’re burning the forest as they found that this is the cheapest and easiest way to plant their crops. Their stupid minds are killing the globe. Someone has to stopped them!
Seems like the days to the end of ground astronomy are countable since the skies will not be transparent anymore.
The largest Moon this year has a special name, Harvest Moon. It’s called so due to the days without electricity, farmers depended on this Moon as a light source to harvest their crops.
Why is this the largest Moon? Aren’t they always the same in sizes? The Moon we see today is around 12% larger than before as the Moon is near perigee, the side of the Moon’s lopsided orbit that comes closest to Earth.
Sadly, I am too tired to get ready my imaging platform. How lazy I am! Even if I have my astronomical equipments ready, the Moon covered by super thick clouds is impossible to be a great subject. These days, I am busy working on establishing my school Astronomical Club. I am totally exhausted.
The camera on Mars Reconnaissance Orbiter (MRO) captured its first light of Mars in the mapping orbit, thus the high resolution image is obtained.
The image is acquired by High Resolution Imaging Science Experiment (HiRISE) acquired at 8:16 PM. The image scale is 29.7 centimeters per pixel. At this moment, the spacecraft was at the altitude of 280 kilometers. To be more accurate, at this resolution, a people is visible in the image.
Tomorrow, I am going to share some plugins to enchance your Adobe Photoshop CS2 in astromical usage.
The focal ratio is the ratio of the focal length to the aperture. So, a telescope with a 2500 mm focal length, and 250 mm aperture is a f/10 scope. A scope with a smaller focal ratio always benefits the users in imaging as it shortens the exposure time. Some people will call it photographic speed.
Why it takes more time to have the same result using the same imager but a slower telescope? Let’s say I have a f/5 and f/10 telescopes and both of them have the same aperture. Let’s make them 8″. Now, I move from f/5 to f/10. Since the aperture is fixed, focal length is the only increasing factor. In this case, it is doubled. As the image you see is in 2 dimensions, it needs a least 2 rays of lights to form an area. Therefore, the lights are spreaded into a factor of 4. In conclusion, you take 4X more the exposure time to get the same S/N.
*S/N refers to Signal/Noise ratio
Below is the formula to calculate the exposure factor,
Exposure Factor = (Focal ratio 1)^2 / (Focal ratio 2)^2
Once you figured out the exposure factor, you know how much is A scope faster than B scope or vice versa.
Everytime I organize a stargazing party, the skies conditions were always bad. Yesterday, we’re supposed to do “moongazing”. Yes, the Moon did show up. However, it’s just 10 minutes and later covered by the thick dark clouds. I haven’t ready up my setup yet during that time. Again, my classmates were disappointed again. Things are not so smooth these days.
From what you see from the left, the Moon is not in a bright yellow tone. Instead, it is shown in sulphur wavelength. (I’m not sure about it, can anyone check it for me?) I am quite sure that the substances in the hazes made it. If you are my loyal reader, you are sure to figure out that these hazes are caused by the Indonesian farmers. They’re burning the forest as they found that this is the cheapest and easiest way to plant their crops. Their stupid minds are killing the globe. Someone has to stopped them!
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