Csillag&shy;túra

Sunrise on the Moon

2018.07.24. admin

hold napkelte

I recorded the Moon for three hours in order to capture the shadows get shorter, and mountains get into the light. The clouds were not my friend, so I kept four frames out of the 32 I recorded. I used the Skywatcher MC 102/1300 tube with the Scopium webcam, mounted on the HEQ5.

4 frames

the two extremes

The IDAS LPS D2 filter

2018.07.15. admin

english fotózás

I tested the new filter (the DSLR clip in version) from within the city (many, too many Sodium and LED lights). I used the following:

Canon 1100D mod,
Canon EF 200mm f2.8L II USM,
HEQ5,
ExposureTime – 15 seconds
FNumber – 3.50
ISOSpeedRatings – 1600

the field of view, Saturn is the green circle

idas lps d2 design

clear, original

clear, edited as best as I could

with the filter, orig

with the filter, edited as best as I could

NGC 6960 – Western Veil – 2018-07-14

2018.07.14. admin

Fátyol-köd NGC 6960

NGC 6960, 12×4 min

This is the first light of the IDAS LPS D2 filter (the DSLR clip in version) I added to my toolkit. Using the Canon 1100D mod, I imaged 12×4 minutes at ISO 1600 with the N 150/750, Baader MPCC Mark III, HEQ5 setup, from Gyerőfidongó, Kolozs county.

english fotózás saját asztrofotóim saját asztrofotóim szappantartóval

Moon-Mars Conjunction – 2018-07-01

2018.07.01. admin

Mars moon raspberry pi videó

Moon, Mars

Old habits die hard, so I pointed a raspberry pi (an old friend of mine, a model B+ from a few years back, still functioning like a charm) plus some compatible camera with a large field of view (fish eye like) to record. Record what? IDK, just make timelapses and something *will* come out of it.

So I captured the conjunction of the Moon and Mars with a very modest and toy-like MacGyverish, but at the same time very versatile setup. The Raspberry Pi board is „floating” in a drainage tube with tight fittings, with a camera front from a cheap mock camera for weather protection and an ND filter in front (the Sun has a tendency to burn its trail into the sensor, already visible on every image). Since I risked to move the camera, the ND filter stays on for the night which kinda sucks… I know.

I also created a max combination of all the recorded images, function finalPixel(x,y) = max(pixel(frame[0], x,y), pixel(frame[1], x, y) … pixel(frame[n], x, y)) where max compared values of luminance = (rgb24 >> 16) + ((rgb24 >> 8) % 256)*2 + (rgb24 % 256).

Omega Centauri – 2016-05-02

2018.06.30. admin

Namíbia omega centauri

Omega Centauri

While in Namibia, I imaged the largest globular cluster or galaxy remnant we have, the ω Centauri. I used a rather dark 300 mm photo lens, and my Canon 1100D mod on the HEQ5. I have taken 36×90 sec, ISO 1600 at f/7.1, according to the EXIF. I may still have some unprocessed raws hiding in some folders on the external hard drives :)

C 80, NGC 5139, Mel 118 [globular cluster in Cen] Omega Centauri 3.9^m ø36′ [wiki] [simbad] 200mm, 400mm, 600mm, 750mm (tovább…)

NGC 6791 – 2018-06-19-20

2018.06.22. admin

NGC 6791

I also captured an open cluster, 12x90sec, ISO 800.

NGC 6791 [open cluster in Lyr] 9.5^m ø10′ [wiki] [simbad] 750mm, 800mm, 1000mm

It is not particularly interesting for visual/photographic viewing, I chose it because it is on my local zenith – and accessible in spite of the heavy light pollution. It is however a cluster that fell onto the sensor of Kepler during its first mission, and it is a very very old cluster. At 13000 light years, it is also very very far away for a visible open cluster.

Messier 39 – 2018-06-19-20

2018.06.22. admin

Messier 39

M39

During that same night, I imaged M39, 12x30sec ISO 800 frames. (tovább…)

Comet 21P/Giacobini-Zinner

2018.06.20. admin

üstökös

21P/Giacobini-Zinner, 2x90sec stack, very little processing, N150/750, Canon 1100D, city sky

Messier 92 – 2018-06-19

2018.06.20. admin

Messier 92

I chose an unlikely location to image M92, I thought since it was in the zenith, I imaged it from the city. So I used my equipment, the N 150/750, Baader MPCC Mark III, Canon 1100D mod, HEQ5 with no naked eye Milky Way. I acquired 11×90 sec ISO 800 frames. Then began the hunting.

To my surprise, many faint, >16^m galaxies are visible too, in spite of the heavy light pollution.