Ina
Lunar Orbiter Camera Footprints at 18.65°, 5.31°
Enhanced Lunar Orbiter image credit NASA/LIORP/LPI/GoneToPlaid.

4102 H3

4102 H3 Enhanced Close-Up of Ina
As far as I am aware, Lunar Orbiter photograph 4102 H3 is the only Lunar Orbiter photograph which shows Ina. It was taken by Lunar Orbiter IV. Ina is at the bottom and towards the right. Unfortunately Ina is partially obscured by onboard film processing defects in this Lunar Orbiter IV photograph. This might explain why the Ina caldera was never spotted for what it plainly is — a volcanic caldera. A remarkable amount of detail is seen within Ina within my enhanced 4X magnificaiton close-up of 4102 H3 which I created from the LOIRP TIFF image file. Yet, literally, take any fine details which you see with a grain of salt since it wasn't until nearly 20 years later that Kodak finally mastered the nuances of controlling film grain.

The Apennine Mountains, Hadley Delta, Hadley Mons and the Apollo 15 landing site are also visible in this Lunar Orbiter photograph. See the Lunar and Planetary Institute's labeled version of this Lunar Orbiter photograph. The Consolidated Lunar Atlas does not clearly show Ina either. Ina is visible in the Consolidated Lunar Atlas, but with nowhere enough detail for anyone to recognize Ina as a volcanic caldera.
Apollo 15 Panorama Camera images AS15-P-0176 and AS15-P-0181
Apollo 15 Panorama Camera images AS15-P-0176 and 0181

AS15-P-0176

AS15-P-0181

Side-by-side comparison
Close-ups of the centers of the two Apollo 15 Panorama Camera images which were used to create the Defense Mapping Agency's topophotomap of Ina. The ITEK Panorama Camera's field of view is 10.77° (horizontal axis in the above image frames). A side-by-side comparison of these two Panorama Camera photos reveals that features within the Ina caldera exhibit striking changes in albedo with changing emission angle.

AS15-P-0176

AS15-P-0181

Low-res 3D anaglyph


High-res 3D anaglyph
Close-up Panorama Camera views of Ina. These views have been reprojected as if Ina had been at the center of the Panorama Camera's field of view when the original photos were taken. Then these images were strongly enhanced and adjusted such that the surrounding terrain has similar brightness and contrast in order to reveal albedo changes within the caldera itself. A remarkable amount of depth and detail is visible in these 3D anaglyphs which were created from the reprojected images at left.
 
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