[citation needed] In the following years he was Artist-in-residence in London (Acme Studios, 1994-1995), in Katwijk aan Zee in the Netherlands (1995-1996), on the Isle of Skye (2005), in La Ciotat in southern France in 2006, and in 2018 he went to Paris for a residency at Factory49.
Since priming the canvases requires long drying times, Boecker always creates entire rows of canvasses with the same dimensions, on which he then alternately works.
Since 2014 Boecker has concentrated on the format 20×16 inches, which he divides by a longitudinal line into two fields, which he then paints with different colors.
The artist reflects upon, how which effect is produced in the viewer, how the colors do interact with each other and to which result: "So wird der Maler manchmal zum Forscher in seinem eigenen Werk, indem er wie ein Archäologe alte Schichten und Zustände sucht und wieder zum Vorschein bringt.
Aber nicht aus einer Laune heraus, sondern immer im Hinblick auf das Gelingen des Bildes als Ganzes."
[12] His stays abroad, e.g. 1995 in Katwijk aan Zee in the Netherlands, 2005 on the Isle of Skye and 2006 to La Ciotat he perceives as research expeditions concerning light and colors.
Thus, not only does the production of his art take a lot of time, but the viewer is also required to take his time to perceive all aspects of the works: "Boeckers Werke strahlen Ruhe und Kraft aus – und auch wenn er bewusst jeden Anschein alles Bildhaften vermeidet, bieten sie dennoch eine Projektionsfläche für eine Vielzahl an Assoziationen."
(in English: "Boeckers' works radiate calmness and strength – and even if he consciously avoids any appearance of anything pictorial, they nevertheless offer a projection screen for a multitude of associations.
The goal of the project space also is to provide more networking in the region and thus to contribute to an active exhibition life.
Since 2017, he also realizes exhibitions curated by him at various venues, such as the Galerie Oqbo in Berlin (2017, Better late than ugly) and the Museum St. Wendel (2019, Breathe).