| Object : | Moon |
| Object size : | 0.5 degree |
| Object magnitude : | - |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Moon |
| Date : | May, 2001 |
| Time (UT) : | ? |
| Mount : | EQ4, motor |
| Lens/telescope : |
MTO Rubinar 4" 1000 mm f/10 |
| Corrector/Barlow : | Pentax 2x tele extender |
| Field (FOV) : | 0.3x0.3 degree, before cropping |
| Filter : | none |
| Camera : |
Spectra Source Instruments HPC-1, CCD 1024x1024
Camera from Stockholm University |
| Exp. time : | 0.01 seconds. |
| Image process tool : | Matlab, All image processing done by my own developed Matlab routines. |
| Processing : | resize, level, cal dark, mosaic from four images |
| Weather : | |
| Comment : |
The rays from the crater Tycho are clearly seen,
up to 2000 km length. The Moons diameter is 3476 km.
The magnification was so big that I had to do a 2x2 mosaic.
The MTO Rubinar was a very advanced lens, but it has some problem with internal reflections.
It looked to be a Maksutov design. |
| More to know : |
Wikipedia:
https://en.wikipedia.org/ wiki/ Moon |
| Date : | May, 2001 |
| Time (UT) : | ? |
| Mount : | EQ4, motor |
| Lens/telescope : |
MTO Rubinar 4" 1000 mm f/10 |
| Corrector/Barlow : | Pentax 2x tele extender. |
| Filter : | none |
| Camera : |
Spectra Source Instruments HPC-1, CCD 1024x1024
Camera from Stockholm University.
Started to use this camera in the middle of 1990s and it was my introduction to
digital photographing. Very expensive at that time. |
| Exp. time : | 0.01 seconds. |
| Image process tool : | Matlab, All image processing done by my own developed Matlab routines. |
| Processing : | resize, level, cal dark, mosaic from four images |
| Weather : | |
| Comment : |
The craters are more easy to see (the shadows) when the moon is in half phase.
The extender was a very old construction, maybe 1960s.
It has the Pentax M42 thread which make it very sturdy. |
English
