OSNOVE NEBA
Prepoznaj. Potem poišči.
Začni z ozvezdji, dodaj imenovane zvezde in Messierjeve objekte. Izmenjuj prepoznavanje slike in iskanje po imenu.
ASTRO ARENA · INTERACTIVE ACADEMY
Razumi nebo.
Nato ga izmeri.
Five connected disciplines turn observation into skill: choose a topic, master one rule, and test it on the sky immediately.
- 05disciplines
- 10sky exercises
- J2000.0coordinate system
PRIPRAVE NA IOAA
Od prepoznavanja do samostojnega opazovanja.
Izberi korak, ki ga potrebuješ. Po vaji preveri napake in isti objekt poišči še brez namiga.
ACCURACY
Oceni. Izmeri. Popravi.
Utrdi kotne razdalje in RA/Dec. Začni z mrežo, nato v načinu IOAA preveri oceno brez koordinatnih črt.
CELOTNO NEBO
Poveži znanje v odpravo.
Na karti preveri sosednje objekte. Nato izberi igralni maraton ali načrtuj opazovanje z Messierjevim terenskim maratonom.
Koristna ponovitev: pri napačnem odgovoru preveri ime, okolico in položaj. Nato ponovi isto spretnost v drugi igri.
YOUR LEARNING LAB
Choose what you want to understand.
Each discipline combines a short explanation, a visual model, and direct practice. The suggested order is a guide, never a locked path.
01 · ORIENTATIONCORE SKY
Constellations
A constellation is not a flat drawing but a recognizable relationship between brighter stars. Find the framework first, then attach the name.
Začni vajo01Understand02Observe03Practice04Review
3 CORE IDEASChoose a step
Selected concept explanation
01 / 03MICRO LESSON
Find the framework
Start with three or four of the brightest stars. Their angles and proportions create a shape that remains recognizable even when the field rotates.
REMEMBER
svetle točke → odnosi → silhuetaAPPLY THE IDEA
Move directly from theory to sky.
Begin with recognition, then switch to locating and relationships between stars.
FIELD NOTES
The formulas you actually need.
Open only the concept you want to revisit. Everything remains available offline.
01Angular units and the great circle+
One degree contains 60 arcminutes. Separation on a sphere follows the shortest great-circle arc; a straight screen distance depends on the projection and is not reliable.
1° = 60′ · 1′ = 60″02Right ascension and the 24h/0h boundary+
RA is circular. From 23h 58m, 00h 02m is only four time minutes away, not almost 24 hours. On an astronomical chart, RA increases to the left.
24h ≡ 00h · 1h = 15°03Declination and the celestial poles+
Declination measures angle from the celestial equator. North is positive and south negative; it reaches +90° and −90° at the poles.
−90° ≤ Dec ≤ +90°04What does J2000.0 mean?+
J2000.0 is a shared reference epoch for coordinates. These exercises do not use the current time, observer location, planets, or the Moon.
RA / Dec · J2000.005How does the IOAA view change?+
Beginner uses a dense coordinate grid. In IOAA, Read uses a local star field without a grid so you estimate coordinates from the surroundings; Locate keeps the full chart but removes coordinate lines.
opazuj → oceni → preveri napako