Hemisphere:  Northern  ·  Contains:  NGC 4725  ·  NGC 4747
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From LoTr 5 to NGC 4725, 


            Nicolas Kizilian
From LoTr 5 to NGC 4725
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From LoTr 5 to NGC 4725

Technical card

Imaging telescopes or lenses: Takahashi Takahasahi FSQ-85EDX

Imaging cameras: QHYCCD 163m

Guiding telescopes or lenses: Takahashi Takahasahi FSQ-85EDX

Guiding cameras: QHY5L-IIc

Software: PixInsight 1.8  ·  Photoshop C6

Filters: Astrodon OIII 5nm  ·  Astrodon LRGB

Dates:March 31, 2020

Frames: 168x300"

Integration: 14.0 hours

Avg. Moon age: 6.48 days

Avg. Moon phase: 40.50%

Basic astrometry details

Astrometry.net job: 3403178

RA center: 12h 52' 37"

DEC center: +25° 43' 58"

Pixel scale: 1.709 arcsec/pixel

Orientation: 1.580 degrees

Field radius: 1.263 degrees

Resolution: 4243x3210

Data source: Backyard


Back to the deep sky with this rarely photographed field, still from my backyard in the Paris region.

It covers an area going (on the left) from the planetary nebula LoTr 5 discovered in 1980 and located at a distance of 1650 light years, up to the beautiful spiral galaxy NGC 4725 located at 41 million light years (on the right ).
To the left of NGC 4725, an elongated galaxy: NGC 4747 located 45 million light years away.
On the right, a galaxy almost five times further away, NGC 4712 at a distance of 200 million light years.

Technical data :
- Takahashi FSQ85 + Corrector
- QHY 163m
- Astrodon L, R, V, B, Oiii 5nm filters
- Guiding : QHY5LII-m
- Mount: AZEQ6GT

L: 50x300"
R: 16x300"
G: 16x300"
B: 15x300"
Oiii : 71x300"

Total exposure : 14h

Acquisition: Voyager
Pixinsight & Photoshop CS6 processing



Nicolas Kizilian

Sky plot

Sky plot


From LoTr 5 to NGC 4725, 


            Nicolas Kizilian