#narrowband

The Dumbbell Nebula ================ A dying Sun-like star, roughly 1,200–1,360 light-years away, has shed its outer layers into space. What remains is this delicate glowing shell of gas, shaped by the final stages of stellar evolution. I chose to keep the wider field around the nebula instead of cropping in too tightly. Against the dense star field of the Milky Way, M27 appears almost fragile — even though the nebula spans several light-years across. Scope: Askar 103APO Lens: Askar 1.0x Flattener Camera: ZWO ASI 294MC Pro Filter: Antlia Tri-Band RGB Ultra Mount: SkyWatcher AZ-EQ5-GT Guiding: SkyWatcher Evoguide 50ED with ZWO ASI 224MC Controller: ZWO ASIAir Pro Focusser: ZWO EAF Integration time: 3hrs 30min Full version and print available at: https://adfr.io/astro/20260624_dumbbell_nebula #astrophotography #astrophoto #astrodon #messier27 #m27 #dumbbellnebula #planetarynebula #narrowband #space #deepsky #vulpecula #milkyway #amateurastronomy

@HopelessDemigod@mstdn.social I mean, allegedly #Celtel in #Tanzania did GSM-450 alongside T-GSM 410, but aside from that ony few applications use lower UHF & VHF bands, Including #TETRA²… Personally, I wish for it to be used for #narrowband #ISM³ applications that could use said new band, like #Wildlife #Trackers or similar…My guess is #NbIoT / #5G & rural #broadband (#BFWA) with PtMP systems…