天文知识百科¿Cómo se clasifican las Estrellas?
La clasificación moderna de las estrellas se basa principalmente en su temperatura (Tipo Espectral) y su luminosidad/tamaño (Clase de Luminosidad). 🌟 Clasificación por Tipo espectral Las estrellas se agrupan en 7 tipos principales de más calientes a más frías: O->B->A->F->G->K->M 👉 Un truco para memorizarlo: “Oh Be A Fine Girl/Guy, Kiss Me” 🔢 Subdivisiones (0–9) Cada tipo se divide en números del 0 al 9: 0 = más caliente.9 = más fría. Ejemplo: A0 es más caliente que A9. 📊 Clasificación por luminosidad (clases de Yerkes): Además del tipo espectral, las estrellas se clasifican por su tamaño y etapa evolutiva: 🧠 Resumen rápido: •Color = temperatura.•Letras (O–M) = tipo espectral. - Números (0–9) = detalle dentro del tipo.•Números romanos (I–VII) = tamaño/luminosidad. ⭐ 3. Clasificación completa (combinación) Se combinan ambas: 👉 Ejemplo: Sol = G2V G2 → tipo espectral (temperatura media)V → secuencia principal ⭐ 4. Otras clasificaciones modernas (complementarias) Además, hoy en día también se consideran: 🔹 Por masa Baja masa (enanas rojas).Media (como el Sol).Alta masa (estrellas azules). 🔹 Por evolución ProtoestrellaSecuencia principal.Gigante roja.Supernova.Remanentes: •Enana blanca. •Estrella de neutrones. •Agujero negro.
图像处理小技巧how to get sharper images in my photos?
Hi all! Are there any good tips on bringing out crisp, sharper images? I feel like mine are just kinda flat. A few, for examples.
Seestar 官方星球How to make the Beehive Cluster Sing ?
Hello everyone , I bought a Seestar S30 Pro to help me build some characters for an upcoming music album. The creative workflow is quite simple . A- I take a photo of M44,the Beehive Cluster. Submit the photo to an AI for enhancing then I ask the AI to describe the image. From that description I co-author with the AI a song lyric. I then copy the lyrics in Suno, a music specific music tool... after many tries I get something I like. I call it Astro-Sonification. It implies that I am the conductor of a celestial orchestra. I am not just making a song about space; I am giving the space a way to speak (or sing). Here is an example of what I do. Please give me feedback and tell me wether or not this is the right place to talk about this. https://suno.com/s/Zeqfb7jxsgo1yW2x My Creative Spirit have the whole sky to explore ! Cheers, Stellia
ASIAIR 官方星球Meridian Flip inconsistency: ASIAIR starts AutoCenter but mount not updated?
Hi,I would like to report a Meridian Flip issue that appears to be related to a mismatch between ASIAIR internal state and the actual mount state (pier side).SetupMount: Sky-Watcher (EQMOD)Control: ASIAIRGuiding: enabled (PHD2)Plate solving: enabled (AutoCenter ON)Meridian Flip settings:Stop tracking: 5 minutes before meridianFlip after meridian: 5 minutes after meridianObserved behaviorDuring an imaging session:ASIAIR correctly:stopped guidingstopped trackingentered Meridian Flip waiting phaseAfter the configured delay, ASIAIR:started Meridian Flipinitiated AutoCenter (plate solving + corrective slews)However:the mount did not appear to be in the correct post-flip geometryplate solving succeeded, but reported an initial offset of ~2.7°subsequent AutoCenter attempts increased the error instead of reducing it (up to 3.1°)This suggests that:the correction vectors were computed assuming a different pier side than the actual oneCritical failureBecause the correction direction was wrong:each AutoCenter correction moved the mount farther from the targetthe system continued trying to converge but diverged insteadWhen I attempted a manual recovery (GoTo to force flip):the mount slewed further in the wrong directioneventually reached the tripod legs (mechanical limit)Even a “Go Home” did not restore correct behavior immediately.Full recovery required:manual reposition to homerestart of the systemfresh initializationSupporting observations from logsBefore flip:PHD2 reports one pier side (e.g. West)During flip:ASIAIR behaves as if flip has occurred (AutoCenter active)After full manual reset:PHD2 reports opposite pier side (e.g. East)This strongly suggests that:the physical pier side change did not occur when ASIAIR assumed it didbut ASIAIR proceeded with post-flip logic anywayExpected behaviorAfter Meridian Flip trigger:Mount performs GOTO and confirms pier side changeOnly after that:AutoCenter should startcorrection vectors should converge (error decreasing)Actual behaviorAutoCenter starts even if mount state is inconsistentcorrection divergesno safeguard stops the processleads to potentially unsafe slewsPotential improvement suggestionsPier side validation before AutoCenterverify mount pier side changed before applying correctionsConvergence checkif error increases after N corrections → abort AutoCenterSafety limitdetect large divergence (>2–3° increasing) and stop slewingOptional debug infoexpose pier side and mount state during flip in logs/UINotesPlate solving itself worked correctlyIssue seems related to state synchronization, not solving accuracyBehavior is reproducible in principle if mount state becomes inconsistent near meridianIf needed, I can provide:full Autorun logsPHD2 logstimestamps of the flip sequenceThanks for your work on ASIAIR—this is a critical workflow area and I hope this report helps improve robustness and safety.
Seestar 官方星球Four nights of clear skies were a brilliant intro to the 2026 spring!
Managed to make a huge amount of progress across the Messier and Caldwell catalogues. We got very lucky down in southwestern UK.
深空摄影Is this a comet trail on galaxy+nebula image?
I got this blue line above an image of the surfboard galaxy and the owl nebula, wondering if it was a comet. 1h 11min, 20 second exposures on SeeStar S30.
NEW
探索星球
创建星球
问题榜单
1望远镜的目镜选择？
2如何在城市里（六级区）出摊打野拍深空？而且新购入的设备总价不超过一万？
3Pixinsight - is it worth it ? How is the learning curve ?
4Sun Guardian Badge - best tips?
5Help with the Moon Phase Tracker?
6What are y’all’s favorite deep sky objects?
7Sirius Warrior - new badge / new questions !?
8Who’s going to AstroCon2025 at Bryce Canyon?
想法榜单
1Notice: Temporary Suspension of Badge Task Reviews During the Holiday (Feb.11–Feb.23)
2🚀 Seestar S30 Pro Post-Processing Challenge is LIVE on Facebook! 🌌
3whitch tools do you use in siril for processing?
43iatlas how can I see from Scotland next
5我有一个手搓的折反望远镜，口径117mm，焦距900mm，可以拍什么？
6Seestar S50 advert -fan made .......
7Lego made solar finder
8关于超级蓝月亮，全面的问题解答(Super Blue Moons: Your Questions Answered)
9Sirius Warrior Acquisition Group (SWAG)
10关于月食的一切，类型、图像以及发生的频率。