Question about image quality
Posted 25 March 2012 - 07:59 PM
is the detail I am looking for eluding me due to:
1. needing more magnification
2. better imager
3. needing double stack
4. all above?
I just want those crisp hair-like details, but I don't know what will get me there.
Posted 25 March 2012 - 09:14 PM
Don't need more mag.
don't need DS
30 second to 1 min captures, keeping about the best 100 frames, then picking the frames with the least deviation (if you're using AviStack2) will probably drop you to about 50ish (or less) frames total to be stacked. the longer your captures the more motion blur you could induce. I've found that stacking 50 frames (or less) is perfectly adequate.
Posted 25 March 2012 - 09:20 PM
Posted 25 March 2012 - 09:28 PM
Posted 25 March 2012 - 09:42 PM
Yeah Andrew, mono is the only way to fly when it comes to solar imaging. The DMK41 on the LS35 gives very good full disk images, but at the cost of high mag images (I can push it to 3x barlow max on my scope really) but I can get pretty reasonable proms at prime, 2x and 3x, your LS60 should perform quiet well with a DMK41.
Glad you like the mantra I'm not a religious person at all, but the mantra has a number of translations, the one I prefer is something along the lines of:
"Almighty Supreme Sun impel us with your divine brilliance so we may attain a noble understanding of reality."
So say we all!
Posted 26 March 2012 - 02:47 PM
Awesome shot! Gotta get a mono imager. That's what I am talking about right there! Will work for DMK41 being painted on a sign right now, lol. BTW, love the Gayatri mantra in your sig
If you just gotta shoot full disk stuff, then the DMK41 is killer, but if you want to push magnification to the limit the DMK21 is a far better way to go. This stuff is shot with a 50mm aperture filter and DMK21. Seeing conditions pose the biggest challenge.
Posted 26 March 2012 - 03:25 PM
Posted 27 March 2012 - 06:29 AM
LS35 + DMK41 = 38.4 x 51.2 (Naturlich)
LS60 + DMK41 = 30.8 x 41 (Not wide enough)
LS60 + DMK41 + 0.8x = 38.5 x 51.3 (Same as LS35 + DMK41)
LS60 + DMK21 + 0.5x = 37.1 x 49.4 (Another popular combination)
LS60 + DMK51 = 36.4 x 48.5 (Perfection?)
By the way a reducer is desirable anyway for the next time something like this happens.
Caveat: To use CCDCalc one has to enter specs from various online documents for the scopes and cameras. I have triple checked my entries so sensible purchases can be made but a typo anywhere including the program code could induce errors. Any necessary corrections are welcome...