Doing Terrestrial Viewing on a Cloudy, Rainy Afternoon at home – Distance: From 970 m (0.60 miles) to 1200 m (0.75 miles).
Last Sunday afternoon (Sept. 1st) the sky was overcast and it was about to start raining. I took a peek through my Celestron Regal M2 100ED Spotting Scope at 64X while aimed at the small hill nearby and I was amazed to see the clarity of the views, no heat waves causing any shimmering! I quickly setup my Celestron 6-inch f/10 SCT (C6) spotter and started taking a few pictures through the scope’s eyepiece with my cell phone to illustrate some of the objects that I viewed with my SCTs as commented before. However, when I noticed that the air was so still while viewing through the C6 at 107X I decided to switch the scope and go for my Meade 8-inch f/10 SCT (M8) with Pentax 14 mm XW eyepiece that produces 143X (nominally) with the M8. Just as soon as I finished setting up the M8, a light rain began to fall and transparency deteriorated quickly but that didn’t deter me from my initial goal. Who knows when I will have the chance again to use this magnification for terrestrial viewing during the day!
Here is a cropped picture with a panoramic view of the hill that I took with my cell phone that cloudy/rainy afternoon at 4:19 pm local time and it shows the actual weather and light conditions present when I took the photos through my scopes posted here (from approx. 3 pm to 5 pm). As I mentioned in my initial post, this small hill is a natural reserve located about 0.6 miles away from my suburban home and the subjects that I view during the day (mostly plants, trees, birds and butterflies) lie within a distance range from 970 m (0.60 miles) at the foot of the hill to 1,200 m (0.75 miles) at the top of the hill, as measured using the Google Earth app.
I used the camera of my lowly Samsung S3 Mini cell phone at x1.0 (without zoom) to take all the pictures taken through my scopes (posted here) using the afocal method, by means of hand holding the cell phone above the eyepiece (mostly a Pentax 14mm XW for 143X with the 8” f/10 SCT). The image size of the pictures was reduced to comply with CN regulations, except for the small cropped photos that are shown at native resolution. No image post-processing was done to any of the pictures as you can clearly see by their washed out look -probably the result of using a telescope not optimized for daytime use (SCTs with original baffles) and the high level of relative humidity present in the air when the photos were taken, including light rain. My goal was not to offer nice, aesthetically pleasing pictures, but to try to illustrate what the observer can see through the eyepiece –actually, the visual images through the scope appear more magnified and more detailed than it looks in the pictures shown here, but with my very limited technical and artistic skills that’s as far as I am willing to go, so I apologize for the low quality!
Edited by Castor, 06 September 2019 - 04:12 AM.