00:47:26	Duane Dehnert:	Subscribed now :)
00:48:00	Vidya Seejattan:	Just subscribed 🙂
01:03:13	Dominic Alfinito:	If we want to maintain the discord as members only while also having a link icon on the website like we do on the website for facebook, Discord servers can be set up to not allow access to new members on the channels until they have been verified by an server admin.
01:05:52	Kenneth Sall:	What I meant about a Discord link is that our icon could simply  go to the HAL Discord page which *requires* member login. That limits who will be able to click on the Discord invitation at the bottom our HAL's Discord page.
01:28:10	Bob Savoy:	Can one use several filters at once?
01:28:40	Jim Tomney:	yes, the author of the article did just that
01:29:18	Wayne:	Yes, but the results will probably be disappointing.  You have to be careful since if, for example, you stack a red filter and a blue filter, you basically get no light through.
01:30:16	Arjun Meenashi Sundar:	You could, but the different wavelengths that different filters allow could clash, leaving not much result. This especially applies for narrowband filters, or very color contrasted filters.
01:30:35	Jim Tomney:	for an example, he used a blue filter with a polarizing filter when viewing Venus in daytime
01:46:26	Bob Savoy:	So, when members show their photos at meetings, they used the indicated filters one at a time and then stacked them. Is that right?
01:47:55	Arjun Meenashi Sundar:	Yes, They would. Especially when doing planetary imaging, the planets are quite bright and thus you would need to take hundreds of very short exposures to get a good image.
01:48:46	Gene Handler:	Yes, exposures are taken through different filters, typically using a monochrome camera. Those images are combined using image processing software to make color images.
01:49:01	Jim Tomney:	Many deep sky observers will use a monochrome camera and take images in (basically) red, green, and blue - then combine them using software into the final color shot
01:50:08	Jim Tomney:	Planetary imagers often do the same - but part of the trick there is the planet rotates while you take each of the 3 channels of data, so you have to "de-rotate" the three before combining into the final product
01:50:32	Michelle Hymowitz:	Who is the auther?
01:54:31	Duane Dehnert:	Yeah what was the name of that book, Light? not finding it
01:55:28	Eric Hymowitz:	Light: The Visible Spectrum and Beyond The Visible Spectrum and Beyond
Watzke, Megan, Arcand, Kimberly, Black Dog & Leventhal
01:56:15	Eric Hymowitz:	https://www.amazon.com/gp/product/163191006X
01:56:41	Duane Dehnert:	👍
02:00:59	Wayne:	Thanks for the explanation about seeing!
02:12:52	Brian Owen:	I need to drop off. Wanted to say I learned a lot. Thank you!
02:13:07	KrystalR:	The electron descending is like going up or down a ladder. Your foot has to be on a step it can't go in between. That "distance" is known/measured so that emitted photon can only be a certain wavelength
02:16:38	Duane Dehnert:	Yes, I must use my Moon filter with my Solar Filter! Also NEVER take the cap off your finder, just take your finder off your scope for solar.
02:21:08	Jim Tomney:	For some examples of beautiful solar images with different filters (wavelengths) check out the ALPO gallery at http://www.alpo-astronomy.org/gallery3/index.php/Solar-Observations-Archive/SolarImages2022/CR2254
02:22:36	Jim Tomney:	Similarly, some Jupiter images from last year's apparition taken in WL, RGB, CH4 (methane) and IR can be found at http://www.alpo-astronomy.org/gallery3/index.php/Jupiter-Images-and-Observations/Apparition-2021
02:31:25	Bob Savoy:	I need to leave. Great presentation.
02:37:24	Lee:	I have to leave for this evening,  Great presentation and meeting tonight.
02:41:23	KrystalR:	Great presentation!