I had read about the atmosphere having an adverse effect when viewing or imaging planets, particularly when the planets are fairly low down. I had read about the Atmospheric Dispersion Corrector (ADC) which has been designed to counteract this by adjusting the focus of the different colour wavelengths to come to the same point of focus on the camera sensor or the eye piece.When one became available on eBay for a reasonable price used, I decided to buy this as the planets are supposed to be fairly low down for the coming years. I am hoping that this will allow me to capture better images of Jupiter in particular, but also of Saturn, Mars and perhaps Venus. This is the first version of the Pierro Astro ADC, but I do not mind as I bought it for much less than it would have cost new.
The adapter comes with two levers to control the two prisms which allow for the adjustment to bring all colour wavelengths which has been split by passing through our atmosphere, to focus at the same point again and hence improve the image visualised or captured on a sensor. I have been told that it does take some effort to get this working properly, but hopefully the effort will be rewarded by great images.
There are instructions and description of how the ADC works. This version will pass UV as well, which means it will be useful for imaging Venus in UV. The prisms being made of fused silica and having anti-reflective coatings optimised for 300-700nm, the prisms supposedly transmit from 170nm to 2500nm.
Now though I do have the Televue powermate T2 adapter to allow me to use my 5x powermate (and my friend’s 2.5x powermate) for imaging, I decided that I should buy the Pierro Astro T2 Barlow adapter which will allow for mounting of the powermate onto the ADC as well.
And as you can see, it does fit very well. Now I will be able to image at different magnifications to suit the seeing of the different nights. Now I just need to await the arrival of the mono imaging camera and for clear skies to experiment with this.
When I have images taken using this corrector, I shall post these and my experience of using this ADC as well.