The Astrocast: Astronomy & Astrophotography

Christopher "Roo" Page

A podcast about Astrophotography and Astronomy. Deep dive discussions into all things Astro. Gear, Best Practices, Interviews, and everything in between.  Follow along with host Christopher "Roo" Page as he takes you through his experience as a beginner in the hobby through becoming a semi-expert in SOME areas. A large community driven podcast that has a very personal touch to it. We try to make sure you'll learn something new every week. Dark sky trips, Club meetups, listener questions, gear reviews occasionally, best practices, NINA, ASIAIR, automating workflows, processing images in PixInsight and other software as well. Best Apps for Astro.  We talk a little bit about everything. You'll love The Astrocast! 

  1. 1d ago

    Episode 108 - He found a Green Star!

    If you'd like to watch the video version of this interview, check it out here.  EPISODE 108: GREEN STARS & SUPERNOVA SURVIVORS WITH DR. MARK HOLLANDS What color would a white dwarf look if you could see it up close? That simple question led Dr. Mark Hollands to some surprising answers, including a star that would appear pale green. This week, Roo welcomes Mark, a Warwick Prize Fellow and astrophysicist at the University of Warwick, for a conversation about the dense stellar remnants that most stars will eventually become. We explore why these stars can have unusual colors, how their spectra reveal their chemistry, and what those findings mean for the way astrophotographers think about star color. Mark takes us through the Sloan Digital Sky Survey, Gaia's transformation of white-dwarf research, and the care needed when translating astronomical measurements into RGB colors. We also discuss the realities of working at professional observatories - from liquid-nitrogen-cooled cameras to telescope breakdowns and whether backyard imagers can photograph the stars in his study. Then we turn to an extraordinary class of survivors: white dwarfs flung through space when their companions explode. Their chemistry offers clues to supernovae and the origins of elements around us. Mark also introduces his favorite stellar oddball, GD 492, known as LP 40-365. There's room for the person behind the research, too: mushroom foraging, birding, sim racing, following your curiosity, and a Pink Floyd reference hiding in a scientific paper. Also in this episode: an update on The Astrocast's new Move Shoot Move partnership! IN THIS EPISODE - How white dwarfs form and why they fascinate Mark. - Pale-green, yellow, and pink stars...and why green is especially unusual. - Spectroscopy as a chemical barcode for starlight. - Gaia, PixInsight, and the limits of mapping measurements to visible color. - Carbon molecules, dense atmospheres, and salmon-pink starlight. - Professional observing, remote telescopes, and future surveys. - Type Ia supernovae, runaway D6 survivors, and stellar chemistry. - Practical advice for students interested in astrophysics. CHAPTERS 00:00 Welcome to The Astrocast 01:24 Meet Dr. Mark Hollands: what is a white dwarf? 02:17 Mark's path into astronomy 05:09 The fate awaiting most stars 06:54 What colors are white dwarfs? 08:36 A star that would look pale green 09:32 How rare are unusual stellar colors? 11:50 Spectroscopy and a star's chemical barcode 16:07 Mining the Sloan Digital Sky Survey 18:35 How Gaia transformed white-dwarf research 21:26 Gaia, PixInsight, and star-color calibration 23:19 Red stars, carbon, and a salmon-pink white dwarf 28:16 Mushroom foraging, birding, and curiosity 31:56 Advice for aspiring astrophysicists 34:00 Life at a professional observatory 39:54 Book recommendation & Move Shoot Move update 40:47 Pink Floyd and Any Colour You Like 41:43 Can amateurs photograph these stars? 43:54 The next generation of spectroscopic surveys 45:57 D6 survivors: white dwarfs launched by supernovae 51:38 Supernova chemistry and the iron around us 54:21 Mark's favorite object: GD 492 / LP 40-365 56:39 Mushrooms, sim racing, and hobbies 57:59 A dream observation with the Extremely Large Telescope 59:37 Roo's closing thoughts 1:00:06 The Astrocast outro song GUEST & RESOURCES Dr. Mark Hollands: https://mahollands.github.io/ Paper discussed: Any Colour You Like https://academic.oup.com/rasti/article/doi/10.1093/rasti/rzag069/8914458?searchresult=1 Book mentioned: The Last Stargazers by Emily Levesque https://link.amazon/B0eV2rQKv JOIN THE ASTROCAST SOCIETY Support the show on Patreon and join our private astronomy and astrophotography Discord community: https://www.patreon.com/c/TheAstrocast SHOP THROUGH OUR AFFILIATE LINKS Your purchases through these links help support The Astrocast at no additional cost to you. Agena Astro: https://agenaastro.com/?rfsn=8632339.cb455f High Point Scientific: https://www.highpointscientific.com/?rfsn=8141859.a5f5d85 Amazon: https://amzn.to/4n0OMsz First Light Optics: https://www.firstlightoptics.com/index/ref/astrocast/ 365 Astronomy: https://www.365astronomy.com/&af=astrocast Move Shoot Move: https://www.moveshootmove.com/?aff=784 Disclosure: The Astrocast earns a small commission from qualifying purchases through these links. As an Amazon Associate, I earn from qualifying purchases. If you enjoyed the episode, follow The Astrocast, leave a rating or review, and share it with someone who loves astronomy. Clear skies! 3 Roo Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening!

    Episode 108 - He found a Green Star!
  2. Oct 13

    Episode 107 - Let's talk Astro

    WELCOME BAAAACK to The Astrocast!  This week, Roo catches up on remote imaging adventures, new gear, and getting back under the backyard skies. A late-night rotator alert at AstroPeak turns into a reminder of why reliable on-site support matters when your telescope is hundreds of miles away. With the rig back in action, Roo sets his sights on the challenging Garlic Bulb Nebula and plans an experiment comparing unfiltered imaging with dual-band filters and ten-minute exposures to capture its faint OIII signal. Back home, the Celestron C8 gets some attention with a Player One Xena 585M guide camera and FHD-OAG MAX. Roo shares his first impressions, considers Sky-Watcher’s SynLink controller as an alternative to ASIAIR or a mini PC, and talks about the MLAstro SAL-33 mount, learning SCT collimation, and the simple joy of neighbors turning their lights off. CHAPTERS 00:00 Opening & Astrocast intro 00:49 Welcome back & a Savannah getaway 02:17 A late-night telescope scare at AstroPeak 03:11 Why on-site support matters for remote imaging 03:59 The rotator collision & getting the rig running again 06:26 Chasing the Garlic Bulb Nebula 07:34 Ten-minute exposures & the faint OIII experiment 08:49 Dark Shark results & throwing out cloudy-night data 10:05 EUROCAST thanks & community updates 10:51 The Astrocast Society, Discord & AstroPeak member discount 11:59 Building out the Celestron C8 beyond the ZWO ecosystem 13:51 Player One Xena 585M & FHD-OAG MAX first impressions 16:14 Bigger prisms, guide stars & a smooth helical focuser 18:50 Sky-Watcher SynLink: a new imaging controller option 21:26 SynLink vs. a mini PC running N.I.N.A. 23:43 Remote imaging features & controller considerations 24:25 C8 progress & the MLAstro SAL-33 mount 25:14 Learning SCT collimation 26:18 A future backyard setup & TeleGizmos 365 cover 26:44 Good neighbors, fewer lights & backyard astronomy 28:20 Upcoming projects, listener thanks & closing thoughts 30:03 Astrocast outro song JOIN THE ASTROCAST SOCIETY Want to talk astronomy, share your images, ask gear questions, and hang out with fellow astrophotographers? Join The Astrocast on Patreon for access to our private Discord community, and an exclusive discount at Astropeak Observatory, under Bortle 1 skies: https://patreon.com/theastrocast As discussed in this episode, Patreon members can also receive $5 per month off AstroPeak hosting, contact Roo for details. AstroPeak remote observatory hosting - remember, JOIN THE PATREON and save 5 bucks a month! https://astropeak.space/how-it-works SOFTWARE & RESOURCES N.I.N.A. — Nighttime Imaging ’N’ Astronomy: https://nighttime-imaging.eu/ Target Scheduler plugin for N.I.N.A.: https://tcpalmer.github.io/nina-scheduler/ Pushover notifications: https://pushover.net/ GEAR & EQUIPMENT LINKS Some links below are affiliate links. If you purchase through them, I may earn a commission at no additional cost to you. Thanks for supporting The Astrocast! Askar SQA55 Astrograph: https://bit.ly/4s4pAWg Celestron C8 — current optical tube listing: https://bit.ly/4dCBTTO ASIAIR:  https://bit.ly/4ew1pdE MLAstro SAL-33 Mount: https://mlastro.com/product/mlastro-sal-33/ ZWO ASI585MC Pro: https://bit.ly/4B3rWIT Sky-Watcher Star Adventurer GTi: https://bit.ly/4sazmq0 Celestron EdgeHD 8 Telescope: https://bit.ly/4jkzGzX TeleGizmos 365 Telescope Covers: https://bit.ly/4eux0MN Askar Color Magic Duo Filter Set: https://bit.ly/47hvSbC Sky-Watcher SynLink: https://bit.ly/4yWse2X GL.iNet Comet Remote KVM: https://amzn.to/4fF9GNp ZWO ASI2600MC Pro Cooled Astronomy Camera: https://bit.ly/4ymcjLD ZWO ASI120MM Mini Guide Camera: https://bit.ly/4vwbs8b ZWO AM3N Harmonic Drive Mount with Tripod: https://bit.ly/4ysuIX1 Mini PC: https://amzn.to/4gHGLcH ZWO EAF Electronic Automatic Focuser: https://bit.ly/4yIEf1X ZWO CAA Camera Angle Adjuster: https://bit.ly/4pnFoC6 ZWO 5 × 2-inch EFW Filter Wheel: https://bit.ly/4w9Kkxa SVBONY SV241 Pro Power Hub: https://amzn.to/4h1lsD9 APC BE600M1 UPS Battery Backup: https://amzn.to/4f8snci NETGEAR GS305E Network Switch: https://amzn.to/44v2uNE TP-Link Tapo P316M Smart Power Strip: https://amzn.to/4ymeJdb Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening!

    Episode 107 - Let's talk Astro
  3. Sep 17

    Episode 105 - Seuls Ensemble (Alone, Together)

    JOIN THE FAMILY: The Astrocast | Weekly Astronomy/Astrophotography Podcast | Patreon WELCOME BAAAACK to The EUROCAST! In this weeks episode, guest host Mark Lindley takes The Astrocast to Europe for a trip through Switzerland, the French Alps, and the Vosges Mountains, where online friendships finally become face-to-face conversations. Between missed train stops, passport trouble, cloudy skies, and a shared meal, Mark catches up with Dr. Klaus Schweitzer and Tim from Belgium. There’s plenty of astrophotography talk along the way: traveling with camera lenses, remote observatories, processing software, simple star trackers, and knowing when to upgrade your gear. But the moment that makes the trip comes under the stars, when Tim sees the Milky Way for the first time. Mark closes his journey with a personal reflection on loneliness, friendship, and finding your people, followed by his original poem, “Alone Together.” Come for the stars. Stay for the company. Featured guests: Mark Lindley, Dr. Klaus Schweitzer, Tim, and Roo. Field-recording note: Parts of the car conversation have rough audio. To skip ahead to the cottage conversation, jump from 36:05 to 1:16:40. Chapters 00:00:00 A first glimpse of the Milky Way — cold open 00:00:48 Mark takes the mic: welcome to the Eurocast 00:04:20 The friends, the route, and the plan 00:09:14 Arriving in Geneva 00:12:21 Chamonix and the French Alps 00:16:48 Alpine hiking, wildlife, and changing glaciers 00:20:42 Sponsor: Dark Dragons Astronomy 00:22:29 The Mont Blanc Express and a break in the clouds 00:26:26 Lausanne, passport trouble, and travel lessons 00:34:53 A missed train stop on the way to the meetup 00:39:05 Meeting Dr. Schweitzer and hitting the road 00:54:52 Finding time to image and planning for remote skies 01:16:40 At the cottage: meet Tim 01:22:06 Cooking dinner and talking dark skies 01:31:08 Camera lenses versus telescopes 01:37:07 Processing software and homemade mounts 01:47:54 Building a remote observatory setup 01:58:09 Simple star trackers, dithering, and calibration frames 02:09:19 Choosing gear, upgrades, and support 02:20:32 Learning from the community 02:28:49 One-on-one with Tim: photography and finding astronomy 02:39:08 Generosity, friendship, and the Astrocast community 02:50:21 Imaging together and learning to gather more data 02:57:52 Mark shares his Mont Blanc Milky Way image 03:03:22 Planning a simple Milky Way setup 03:13:10 Finding the joy in less gear 03:22:11 Under the Stars: a clearing above the clouds 03:24:24 Tim sees the Milky Way for the first time 03:29:20 Heading home: Mark reflects on the trip 03:38:28 “Alone Together” — a poem by Mark Lindley 03:41:13 Roo’s closing thanks and epilogue 03:43:47 The Astrocast outro song Music credit “La fille aux cheveux de lin” from Préludes, Book I by Claude Debussy. MIDI performance by Katsuhiro Oguri, rendered using Garritan Steinway; published by Quinn Mason. Sourced from IMSLP, file #280628, licensed under Creative Commons Attribution 3.0. Mixed beneath poetry and closing narration for this episode. ✨ Agena Astro | 🔭 High Point Scientific | 📦 Amazon | 🌌 First Light Optics | 🪐 365 Astronomy Please note!! When using affiliate links, PLEASE check and make sure you don't have an active ad-blocker/incognito mode on, as it will prevent the link from working. We also would like to welcome 365Astronomy as a new affiliate with the Astrocast! This affiliate has been requested for our friends across the pond in Europe, so I hope someone will use it. Thanks for your support!!! Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening!

    Episode 105 - Seuls Ensemble (Alone, Together)
  4. Aug 25

    Episode 103 - Meteor Showers, meet Networking Powers!

    ✨ Agena Astro | 🔭 High Point Scientific | 📦 Amazon | 🌌 First Light Optics | 🪐 365 Astronomy Please note!! When using affiliate links, PLEASE check and make sure you don't have an active ad-blocker/incognito mode on, as it will prevent the link from working. We also would like to welcome 365Astronomy as a new affiliate with the Astrocast! This affiliate has been requested for our friends across the pond in Europe, so I hope someone will use it. Thanks for your support!!! Welcome BAAACK to The Astrocast! This week, Roo sits down and chats about getting back to basics, watching meteor showers with friends and family, and lots of new software for managing shared/networked folders and files.  RustDesk: https://rustdesk.com/ SyncThing: https://syncthing.net/ Home Assistant: https://www.home-assistant.io/ Affiliate links to popular Astrogear!  ASI2600MC Pro - Cooled Astronomy Camera: https://bit.ly/4ymcjLD ASI2600MM Pro (Mono) - https://bit.ly/3RsqQVr ASI6200MC Pro (Full Frame OSC) - https://bit.ly/4h4iFsN ASI6200MM Pro (Full Frame Mono) -- https://bit.ly/4yIhZ2u AM3N Harmonic Drive Mount (w/tripod) - https://bit.ly/4ysuIX1 Seestar S30 Pro Smart Scope : https://bit.ly/4hH14Hp Want to run a remote rig??? You can build your own version of my remote rig! The only things I don't have listed here yet are the DeepSkyDad FP2 and Dew heaters. I'm workin on that!  GLI.Net Comet - Remote KVM : https://amzn.to/4fF9GNp ASI2600MC Pro - Cooled Astronomy Camera: https://bit.ly/4ymcjLD ASI120MM Mini - Guide Camera: https://bit.ly/4vwbs8b AM3N Harmonic Drive Mount (w/tripod) - https://bit.ly/4ysuIX1 Mini PC - https://amzn.to/4gHGLcH ZWO EAF - Focuser: https://bit.ly/4yIEf1X ZWO CAA - Rotator/Camera Angle Adjuster: https://bit.ly/4pnFoC6 ZWO 5X2” EFW Filter Wheel (2025) - Filter Wheel: https://bit.ly/4w9Kkxa SVBONY SV241 Pro - Power Hub: https://amzn.to/4h1lsD9 APC BE600M1 - UPS Battery Backup: https://amzn.to/4f8snci NETGEAR GS305E - Network Switch: https://amzn.to/44v2uNE TP-Link Tapo P316M - Smart Power Strip (HS300 successor/equivalent): https://amzn.to/4ymeJdb Please note - these are affiliate links and The Astrocast receives a small percentage of the profits from the seller. The prices do not change for you, and it benefits the show. Win win!  Get your AC Merch Today - https://qcroo.com/store Thanks for your support! If you enjoyed this episode and would like to make a 1 time contribution, please feel free to at Buy me a Coffee! If this kind of content is up your alley, please consider joining our Patreon! You'll get access to the incredible members only Discord where we all chat 24/7! Find us on Facebook! - if you don't join the Patreon, please stop by and say hi! Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening! Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening!

    Episode 103 - Meteor Showers, meet Networking Powers!
  5. Aug 7

    Episode 102 - Reflect Deez Orbitals

    WELCOME BAAAACK to The Astrocast! Roo sits down this week for a quick catch up with you guys to discuss his next project, and the ongoing NONSENSE that is Reflect Orbital. This one gets a little spicy, fair warning!!! Read the FCC Petition from AAS here.  CALL OR WRITE YOUR LOCAL POLITICIANS! MAKE them do SOMETHING!  Join our Patreon, and get access to the BEST community in AP!: https://www.patreon.com/c/TheAstrocast 🛒 AFFILIATE DISCLOSURE Some links below are affiliate links. The Astrocast may receive a small commission at no additional cost to you. As an Amazon Associate I earn from qualifying purchases. Ad blockers, incognito browsing and strict tracking protection may interfere with affiliate tracking. Thank you for supporting the show! ✨ SHOP WITH THE ASTROCAST Agena Astro: https://agenaastro.com/?rfsn=8632339.cb455f High Point Scientific: https://www.highpointscientific.com/?rfsn=8141859.a5f5d85 Amazon: https://amzn.to/4n0OMsz First Light Optics: https://www.firstlightoptics.com/index/ref/astrocast/ 🔭 GEAR DISCUSSED Canon RF 85mm f/1.2L: https://amzn.to/3S6iyTi ZWO ASI6200MM Pro: https://bit.ly/4yIhZ2u ZWO ASI6200MC Pro: https://bit.ly/4h4iFsN ZWO AM3N with tripod: https://bit.ly/4ysuIX1 ZWO Seestar S30 Pro: https://bit.ly/4hH14Hp 🌌 BUILD ROO’S REMOTE RIG GL.iNet Comet Remote KVM: https://amzn.to/4fF9GNp ZWO ASI2600MC Pro: https://bit.ly/4ymcjLD ZWO ASI2600MM Pro: https://bit.ly/3RsqQVr ZWO ASI120MM Mini: https://bit.ly/4vwbs8b ZWO AM3N: https://bit.ly/4ysuIX1 Mini PC: https://amzn.to/4gHGLcH ZWO EAF: https://bit.ly/4yIEf1X ZWO CAA Rotator: https://bit.ly/4pnFoC6 ZWO 5 × 2-inch EFW: https://bit.ly/4w9Kkxa SVBONY SV241 Pro Power Hub: https://amzn.to/4h1lsD9 APC BE600M1 UPS: https://amzn.to/4f8snci NETGEAR GS305E Switch: https://amzn.to/44v2uNE TP-Link Tapo P316M Power Strip: https://amzn.to/4ymeJdb 👕 SUPPORT THE SHOW Astrocast merch: https://qcroo.com/store Buy Me a Coffee: https://buymeacoffee.com/theastrocast Join our Patreon and members-only Discord: https://www.patreon.com/c/TheAstrocast Support the show Email me at "Roo@TheAstrocast.com" with any questions/comments. Thanks for listening!

5
out of 5
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About

A podcast about Astrophotography and Astronomy. Deep dive discussions into all things Astro. Gear, Best Practices, Interviews, and everything in between.  Follow along with host Christopher "Roo" Page as he takes you through his experience as a beginner in the hobby through becoming a semi-expert in SOME areas. A large community driven podcast that has a very personal touch to it. We try to make sure you'll learn something new every week. Dark sky trips, Club meetups, listener questions, gear reviews occasionally, best practices, NINA, ASIAIR, automating workflows, processing images in PixInsight and other software as well. Best Apps for Astro.  We talk a little bit about everything. You'll love The Astrocast! 

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