A rather simple question or perhaps not. At what brightness level does the Moon really begin to affect
Thanks for any thoughts...
Clear Skies!
I'm using the L-Pro, will look at the charts again and see what nm range differences are between it and the L-Enhanced. Thanks for the info and that image looks awesome.Juno16 wrote: ↑Wed Oct 13, 2021 10:58 pm Hi Chris,
You are shooting OSC and there sure are some options.
I get marginal results when I shoot broadband even with a lp filter (I use a IDAS LPS D-1 as it works well with Na vapor lighting).
With my Optolong L-eNhance, I get pretty decent results (to me anyway) even with a very bright moon.
A recent image of the Heart nebula imaged over two partial nights with a 95% and 90% illuminated moon.
I have heard that the Optolong L-eXtreme is even better, but I am happy with the results from the L-eNhance.
Opt has all three charts on one page, making it easy to do the comparisonJuno16 wrote: ↑Wed Oct 13, 2021 10:58 pm Hi Chris,
You are shooting OSC and there sure are some options.
I get marginal results when I shoot broadband even with a lp filter (I use a IDAS LPS D-1 as it works well with Na vapor lighting).
With my Optolong L-eNhance, I get pretty decent results (to me anyway) even with a very bright moon.
A recent image of the Heart nebula imaged over two partial nights with a 95% and 90% illuminated moon.
I have heard that the Optolong L-eXtreme is even better, but I am happy with the results from the L-eNhance.
chris_g wrote: ↑Thu Oct 14, 2021 1:42 am
Opt has all three charts on one page, making it easy to do the comparison
https://optcorp.com/products/optolong-l ... ter-2-inch
I looked at the L-Enhance and the L-Extreme, the L-Extreme actually block the blue and orange wave lengths where as the L-Enhance blocks just the orange. I remember now why I chose the L-Pro over the L-Enhance as it lets in more color in the higher end of the visual frequency range, orange and red, I do like color. I believe the L-Extreme would most likely block the Seven Sisters and their reflection nebula as they transmit primarily blue.
After reviewing those charts again, I think I would go with the L-Enhanced for imaging DSO with a bright moon in the sky. It's amazing what I've learned these past few months and I know I've only just begun to scratch the surface, thank you. Now I also understand what APT means by NB Time as it starts at astro-twilight end. Narrow band filters are blocking the moon's light was well...
Right now, I think I am going to try an imaging run in full moonlight on the Seven Sisters using the L-Pro with the same exposure and number of images as I did last time and see how it turns out, those were taken with no moon in the sky. Experimentation!!!
No it's not modified, wife would have a fit if I did that even if we don't use it any more for everyday stuff. And the cost for a modified Canon is about the same on EBay as what it would cost me to modify mine as well. I figured I would save my pennies and get a dedicated astro camera when I'm ready for that leap. I want a ASI 2600MM but that is a LOT of pennies and then there are the filters for even more pennies!Juno16 wrote: ↑Thu Oct 14, 2021 2:04 amchris_g wrote: ↑Thu Oct 14, 2021 1:42 am
Opt has all three charts on one page, making it easy to do the comparison
https://optcorp.com/products/optolong-l ... ter-2-inch
I looked at the L-Enhance and the L-Extreme, the L-Extreme actually block the blue and orange wave lengths where as the L-Enhance blocks just the orange. I remember now why I chose the L-Pro over the L-Enhance as it lets in more color in the higher end of the visual frequency range, orange and red, I do like color. I believe the L-Extreme would most likely block the Seven Sisters and their reflection nebula as they transmit primarily blue.
After reviewing those charts again, I think I would go with the L-Enhanced for imaging DSO with a bright moon in the sky. It's amazing what I've learned these past few months and I know I've only just begun to scratch the surface, thank you. Now I also understand what APT means by NB Time as it starts at astro-twilight end. Narrow band filters are blocking the moon's light was well...
Right now, I think I am going to try an imaging run in full moonlight on the Seven Sisters using the L-Pro with the same exposure and number of images as I did last time and see how it turns out, those were taken with no moon in the sky. Experimentation!!!
Chris, you might have mentioned this before, but is your Canon astro modified?
Good to know, I'll might end up getting a modified Canon before I get an actual astro camera, they are less expensive by far. And now I understand more about what the different modifications actually do for them.
Check the charts on the L-Enhanced and L-Extreme, every wave length is blocked except for a very narrow band, would also block the vast majority of the moon's reflected light from the Sun up in the yellow and orange, unlike my L-Pro.Star Dad wrote: ↑Thu Oct 14, 2021 6:47 pm I'm amazed that you get such good images with a near full moon, Juno. I will have to try doing some nebulae next full moon. <chuckle> Inevitably, full moon = clear skies and new moon = total clouds. Of course lately its just been clouds. My one nights use of the L-enhance filter showed me its possibilities but I used it when the moon was not yet up over the horizon.
Are you referring to thisCheck the charts on the L-Enhanced and L-Extreme, every wave length is blocked except for a very narrow band, would also block the vast majority of the moon's reflected light from the Sun up in the yellow and orange, unlike my L-Pro. APT has a time allotment in the app called Narrow Band time. It starts at astro twilight end whether the moon is up or not. Makes sense.
Yes.Star Dad wrote: ↑Fri Oct 15, 2021 1:32 pmAre you referring to thisCheck the charts on the L-Enhanced and L-Extreme, every wave length is blocked except for a very narrow band, would also block the vast majority of the moon's reflected light from the Sun up in the yellow and orange, unlike my L-Pro. APT has a time allotment in the app called Narrow Band time. It starts at astro twilight end whether the moon is up or not. Makes sense.app : https://play.google.com/store/apps/deta ... n_US&gl=US
To image or observe a faint deep sky objects is needed to use the darkest time of the night. This is the time between the evening astro twilight end, the morning astro twilight beginning and when the Moon is below the horizon. In APT that time is named DSD Time - Deep Sky Darkness Time. If the imaging is through narrow band filters, the Moon is less significant factor and important is the time between the astro twilights. This time is named NB Time - Narrow Band Time.
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