Tag Archives: E-PL5

Olympus E-PL5 compact UV imaging camera

We made a trip to the Bicester garden centre in Bicester Oxford on Saturday, not far from the world famous tourist shopping hotspot Bicester Village. It is interesting that many people coming to England go to Bicester Village to shop, whereas when I go to Bicester, it is normally to the garden centre. Continue reading Olympus E-PL5 compact UV imaging camera

Lenses: what’s in a brand (35mm F3.5 enlarger lenses)?

As I have just done a test on M42 lenses comparing their UV-transmission, I thought I would also do a test of a few different brands of 35mm F3.5 enlarger lenses (both new and older casing designs) using the same setup, to see if there is much variation in their UV-transmission. Continue reading Lenses: what’s in a brand (35mm F3.5 enlarger lenses)?

Lenses: what’s in a brand (35mm F3.5 M42 lenses)?

There are so many different 35mm F3.5 lenses available out there. Even within the same stable of lenses in a company, you can see different designs which were clearly bought from different manufacturers and then rebadged. Some companies are well known for doing this, such as Prinzgalaxy and Soligor. I thought it was time for another comparison test. Continue reading Lenses: what’s in a brand (35mm F3.5 M42 lenses)?

William Optics Megrez 72 APO – solar & moon imaging

I had borrowed my friend’s William Optics Megrez 72mm Apochromatic refractor for astrophotography, although not had a chance to use it. This telescope is paired with the Astrotrac TT-320-TX AG to correct for the earth’s rotation while imaging. This setup is mounted on my Manfrotto 075 tripod. This 72mm F6 telescope has a focal length of 430mm (or 860mm effective focal length on the Micro 4/3rds system). As I had used the Skywatcher ED80 for solar and moon imaging, I decided to see if there was any benefit from using this apochromatic refractor. Continue reading William Optics Megrez 72 APO – solar & moon imaging

Skywatcher ED80 – solar and bird imaging

I own a Skywatcher ED80 refractor, which is an 80mm F7.5 telescope with a focal length of 600mm; effective focal length is 1200mm on the Micro 4/3rds system. I bought this as a guide scope for my main astrophotography system. But I normally use this telescope for solar or moon imaging, as it is very easy to set up.  Continue reading Skywatcher ED80 – solar and bird imaging