| Date & Time: | Dec 12 2020, from 22:12 to 22:40 JST(+0900) |
| Composed 8 shots with 4 minutes exposed |
| Optical: | TAMRON 17-35mm Di OSD (f=17mm, stop: F4.0) |
| with IDAS LPS-P2-FF & Kenko Softon Clear filters |
| Auto-guided with Kenko SKYMEMO Equatorial |
| Digital Camera: | Canon EOS 550D (Remodeled) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
Astroarts StellaNavigator
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"Eridanus" is a name of river in the Greek mythology.
The river starts at the left foot of Orion, at Rigel, in the north, flows southward meandering a few times,
and ends far to the south at Achernar, meaning the end of river.
The star, alpha Eri is bright over the first magnitude, and is only visible in latitudes south of 33 degrees, which eliminates most of Japan.
The story of Eridanus is related with Phaethon, son of Helios the Sun God.
One day, Phaethon borrowed the celestial chariot from his father, the sun was seen as carried on a chariot driven by Helios.
But Phaethon failed to control the chariot driving on the original road on which the sun should be carried.
As he galloped so far in the sky, and the earth was to freezing, then he plunged so close to the ground that the earth was burnt.
Zeus was very angry when he knew this nonsense, and sent a thunderbolt by which killed him.
And the story tells that Phaethon fell into the river Eridanus.
You can see a very minor constellation of Fornax that is seen being held in the Eridanus.
The constellation was invented by Lacaille in 16th century, and represents a furnace for chemical experiments.
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| IC2118 |
.....Faint nebula 3 deg. length in NS reflecting light of Rigel. |
| Molecular Cloud around IC2118 |
.....Distribution of dimmed molecular clouds in SW of IC2118 |
| NGC1084 |
.....Small face-on galaxy positioned near border to Cetus. |
| NGC1097 |
.....A medium-sized bared galaxy in central region of Fornax. |
| NGC1187 |
.....Small bared galaxy in central region of Eridanus |
| NGC1200 & Abell 415 |
.....Small lenticular galaxy and neighboring galaxy cluster at 3.6deg. SE of ηEri |
| NGC1232 |
.....A spiral galaxy with clear arms in center of Eridanus |
| NGC1253 |
.....Interacting galaxy in NW edge of Eridanus |
| NGC1255 |
.....Medium-sized spiral in north of Fornax, 65 million ly away |
| NGC1300 |
.....Well-proportioned bared galaxy about 2.3deg. north of tau4 Eri. |
| NGC1315 |
.....Small galaxy in central region of Eridanus |
| NGC1316,NGC1317 |
.....Large-sized member galaxies of Fornax Cluster |
| Fornax Cluster |
.....Fairly close galaxy cluster distributed between Fornax & Eridanus |
| NGC1325, NGC1332 |
.....Small spiral & lenticular galaxies in central region. |
| NGC1337 |
.....An edge-on bared galaxy in northern region of Eridanus |
| NGC1350 |
.....Member barred galaxy of For. Cluster positioned at 6deg. SW of αFor |
| NGC1360 |
.....A dimmed and elliptic planetary nebula in NE of Fornax |
| NGC1365 |
.....A medium-sized bared galaxy in NE region of Fornax. |
| NGC1371 |
.....A medium-sized galaxy in northern part of Fornax, 60 million ly away |
| NGC1395 |
.....An elliptic galaxy positioned in central region, 60 million ly. away. |
| NGC1398 |
.....Small & round galaxy in NE of Fornax. |
| NGC1407 |
.....Small elliptical galaxy and surrouonding group in central region |
| NGC1425 |
.....Medium-scaled spiral galaxy at 2deg. north of δ For |
| NGC1518, NGC1521 |
.....Two small galaxies positioned at 3 deg. NE of tau9 |
| NGC1532 |
.....An edge-on galaxy with 15' in length 3deg. NW of upsilon4 Eri |
| NGC1535 |
.....Compact Planetary Nebula positioned in NE region |
| Around NGC1622 |
.....Three paralleling galaxies just north of nu Eri. |
| NGC1637 |
.....A round spiral galaxy in northeast edge. |
| NGC1723 Group |
.....Small-scaled galaxy group at 4.6deg. SW of Rigel |
| HCG21 |
.....A compact galaxy group at 50' north of τ1, on the boundary on Cetus |
| HCG23 |
.....A compact galaxy group at 2.7deg. ESE of ηEri |
| HCG31 |
.....Compact galaxy group at 1.8deg. NW of βEri |
Guide for Deep Sky Objects
