Crisping-up the limb with strong filters I have long practiced. In that vein the use of a W#22 (Orange)...... darker/more contrasty than the common or garden ( ) #21....has proved invaluable for rising dispersion-afflicted Mercury on a fair few mornings. Strangely its close 'neighbours' - #23A & #25 - are poorer for this......
The later months of the last Mars apparition very fruitful from 2016 Sept to 2017 Feb thanks to much use of the #22 and the dark red #29.
Yes the Neodymium is pretty terrible with low planets (likewise the magentas) – but the ADC – more than being promising – is proving a very effective must. Certainly an order better than the old Ramsden ‘trick’ and, prior to the ADC, the residual CA in the optical train (Binovu+Amici) of the D-K. More effective in that I am able to get better hue-differentiation than those Ramsden-style efforts which tended to a more monochrome palette.
I’ve seen a couple of comments about the ADC doing nothing for the seeing........well it does indirectly – no magic – as I figured recently when looking at Saturn’s satellites. After some 15-20 minutes I applied the device and immediately they took on more sparkle. When we consider them at low altitude: due to dispersion they are no longer point sources but somewhat drawn out into short spectra thus dimmed/more seeing-prone; and of course the ADC puts all that light back to a tighter point.....
With planets all that dispersion-jumble when seeing not so good is likewise tidied/realigned making it easier on the eye in my experience.
Speaking of the Neodymium: awhile back I added it to the filter combos used on Venus when I found it did a great job with restoring contrast in a bright milk sky.
A thread here...... https://www.cloudyni...a-neo-surprise/
Got limited opportunity to see that through.....but just today the views bear out my impressions and hoping to follow up better this time......
Oh yes! Looking good for clear tonight so have left the Neo on hand to see what the ADC does with the dispersion enhancement of that filter.
Edited by David Gray, 14 July 2018 - 12:47 PM.